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      "begin": "(?=\\[(@{1,3})[[:space:]]*[[:alpha:]])",
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      "patterns": [
        {
          "begin": "\\[(@{1,3})",
          "end": "(?=[^_\\.'[:word:]])",
          "beginCaptures": {
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          "patterns": [{ "include": "#attribute-identifier" }]
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        { "include": "#attribute-payload" }
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            "1": { "name": "support.class entity.name.class" },
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          "match": "\\b([[:alpha:]][[:word:]]*)\\b",
          "name": "entity.other.attribute-name.css constant.language constant.numeric"
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          "end": "(?=\\])",
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        { "include": "#value-expression" }
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        { "include": "#comment-block-doc" },
        { "include": "#comment-block" }
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      "begin": "(^[ \\t]+)?((//))",
      "end": "(?=^)"
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      "begin": "/\\*",
      "end": "\\*/",
      "name": "comment.block",
      "patterns": [{ "include": "#comment-block-doc" }, { "include": "#comment-block" }]
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    "comment-block-doc": {
      "begin": "/\\*\\*(?!/)",
      "end": "\\*/",
      "name": "comment.block.documentation",
      "patterns": [{ "include": "#comment-block-doc" }, { "include": "#comment-block" }]
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      "beginCaptures": {
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      "patterns": [
        {
          "match": "(?:\\b|[[:space:]]+)([?])(?:\\b|[[:space:]]+)",
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      "patterns": [
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          "begin": "\\[(%{1,3})",
          "end": "(?=[^_\\.'[:word:]])\\:?",
          "beginCaptures": {
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          },
          "patterns": [{ "include": "#attribute-identifier" }]
        },
        { "include": "#attribute-payload" }
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    "jsx": {
      "patterns": [{ "include": "#jsx-head" }, { "include": "#jsx-tail" }]
    },
    "jsx-attributes": {
      "patterns": [
        {
          "begin": "\\b([[:lower:]][[:word:]]*)\\b[[:space:]]*(=)",
          "end": "(?<![=])(?=[/>[:lower:]])",
          "comment": "meta.separator",
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              "name": "markup.inserted constant.language support.property-value entity.name.filename"
            },
            "2": { "name": "keyword.control.less" }
          },
          "patterns": [{ "include": "#value-expression-atomic-with-paths" }]
        },
        {
          "match": "(\\b([[:lower:]][[:word:]]*)\\b[[:space:]]*+)",
          "captures": {
            "1": { "comment": "meta.separator" },
            "2": {
              "name": "markup.inserted constant.language support.property-value entity.name.filename"
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      "end": "(?=</)",
      "beginCaptures": {
        "1": { "comment": "meta.separator" },
        "2": { "name": "punctuation.definition.tag.end.js" }
      },
      "patterns": [
        {
          "comment": "FIXME: seems necessary in order to properly tokenize `[[:word:]]</` boundary",
          "match": "[[:lower:]][[:word:]]*"
        },
        { "include": "#value-expression" }
      ]
    },
    "jsx-head": {
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      "applyEndPatternLast": true,
      "beginCaptures": {
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      "endCaptures": {
        "1": { "comment": "meta.separator" },
        "2": { "name": "punctuation.definition.tag.end.js" }
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      "patterns": [
        {
          "begin": "\\G",
          "end": "(?=[[:space:]/>])[[:space:]]*+",
          "comment": "meta.separator",
          "patterns": [
            { "include": "#module-path-simple" },
            {
              "match": "\\b[[:lower:]][[:word:]]*\\b",
              "name": "entity.name.tag.inline.any.html"
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        { "include": "#jsx-attributes" },
        { "include": "#jsx-body" },
        { "include": "#comment" }
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      "end": "(>)",
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      "comment": "meta.separator",
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        "1": { "name": "punctuation.definition.tag.end.js" },
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        "1": { "name": "punctuation.definition.tag.end.js" }
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        { "include": "#module-path-simple" },
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          "match": "\\b[[:lower:]][[:word:]]*\\b",
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          "begin": "([\\(])",
          "end": "([\\)])",
          "captures": {
            "1": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
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          "patterns": [{ "include": "#module-path-extended" }]
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      "patterns": [
        { "include": "#module-name-extended" },
        { "include": "#comment" },
        {
          "comment": "NOTE: end early to avoid too much reparsing",
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          "end": "(?<=[[:word:]\\)])|(?=[^\\.[:upper:]/])",
          "beginCaptures": {
            "1": { "name": "keyword.control.less" }
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              "patterns": [{ "include": "#comment" }, { "include": "#module-name-extended" }]
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      "begin": "(?=\\b[[:upper:]])",
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    "module-path-simple": {
      "patterns": [
        { "include": "#module-name-simple" },
        { "include": "#comment" },
        {
          "comment": "NOTE: end early to avoid too much reparsing",
          "begin": "([\\.])",
          "end": "(?<=[[:word:]\\)])|(?=[^\\.[:upper:]/])",
          "beginCaptures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
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              "end": "(?<=[[:word:]\\)])|(?=[^\\.[:upper:]/])",
              "patterns": [{ "include": "#comment" }, { "include": "#module-name-simple" }]
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      ]
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      "patterns": [
        {
          "begin": "(?:\\G|^)[[:space:]]*\\b(type)\\b",
          "end": "(?==)",
          "beginCaptures": {
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              "name": "entity.other.attribute-name.css constant.language constant.numeric"
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        },
        {
          "begin": "(=)",
          "end": "(?=;)",
          "beginCaptures": {
            "1": { "name": "keyword.control.less" }
          },
          "patterns": [
            { "include": "#attribute" },
            { "include": "#comment" },
            { "include": "#class-item-inherit" },
            { "include": "#class-item-method" }
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        }
      ]
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        "1": { "name": "keyword.other" }
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      "endCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [{ "include": "#module-item-type-bind-body-item" }]
    },
    "module-item-external": {
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      "end": "(;)|(?=}|\\b(class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|type|val|with)\\b)",
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      },
      "endCaptures": {
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        { "include": "#module-item-let-value-bind-type" },
        {
          "begin": "(=)",
          "end": "(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
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            { "include": "#attribute" },
            {
              "begin": "\"",
              "end": "\"",
              "name": "string.double string.regexp",
              "patterns": [
                { "include": "#value-literal-string-escape" },
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        }
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    "module-item-include": {
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      },
      "patterns": [{ "include": "#signature-expression" }]
    },
    "module-item-let": {
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          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
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        { "include": "#module-item-let-value" }
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    "module-item-let-module": {
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    "module-item-let-module-bind-type": {
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      "patterns": [
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          "begin": "\\(",
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    "module-item-let-module-rec": {
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      "patterns": [{ "include": "#module-item-let-module-bind-name-params-type-body" }]
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    "module-item-let-value": {
      "patterns": [
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        { "include": "#module-item-let-value-rec" },
        { "include": "#module-item-let-value-bind-name-params-type-body" }
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    },
    "module-item-let-value-and": {
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    "module-item-let-value-bind-name-params-type-body": {
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      "patterns": [
        { "include": "#module-item-let-value-bind-name-or-pattern" },
        { "include": "#module-item-let-value-bind-params-type" },
        { "include": "#module-item-let-value-bind-type" },
        { "include": "#module-item-let-value-bind-body" }
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    },
    "module-item-let-value-bind-params-type": {
      "begin": "(?=[^[:space:]:=])",
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      "patterns": [
        { "include": "#comment" },
        { "include": "#module-item-let-value-param" },
        {
          "begin": "(?<![:])(:)[[:space:]]*(?![[:space:]]*[:\\)])",
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          },
          "patterns": [{ "include": "#type-expression-atomic" }]
        }
      ]
    },
    "module-item-let-value-bind-parens-params": {
      "begin": "\\((?![\\)])",
      "end": "\\)",
      "patterns": [
        { "include": "#operator" },
        { "include": "#pattern-parens-lhs" },
        { "include": "#type-annotation-rhs" },
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    "module-item-let-value-bind-pattern": {
      "begin": "(?<=[^[:word:]]and|^and|[^[:word:]]external|^external|[^[:word:]]let|^let|[^[:word:]]method|^method|[^[:word:]]rec|^rec)",
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        { "include": "#pattern" }
      ]
    },
    "module-item-let-value-bind-type": {
      "comment": "FIXME: lookahead",
      "begin": "(?<![:])(:)(?![[:space:]]*[:\\)])",
      "end": "(?==[^>]|[;}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|val|with)\\b)",
      "beginCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [
        {
          "begin": "\\b(type)\\b",
          "end": "([\\.])",
          "beginCaptures": {
            "1": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
            }
          },
          "endCaptures": {
            "1": { "name": "entity.name.function" }
          },
          "patterns": [{ "include": "#pattern-variable" }]
        },
        { "include": "#type-expression" }
      ]
    },
    "module-item-let-value-param": {
      "patterns": [
        { "include": "#module-item-let-value-param-label" },
        { "include": "#module-item-let-value-param-type" },
        { "include": "#module-item-let-value-param-module" },
        { "include": "#pattern" }
      ]
    },
    "module-item-let-value-param-label": {
      "patterns": [
        {
          "begin": "(\\b[[:lower:]][[:word:]]*\\b)?[[:space:]]*(::)",
          "end": "(?<=[[:space:]])",
          "beginCaptures": {
            "1": {
              "name": "markup.inserted constant.language support.property-value entity.name.filename"
            },
            "2": { "name": "keyword.control" }
          },
          "patterns": [
            { "include": "#pattern" },
            {
              "begin": "(=)",
              "end": "(\\?)|(?<=[^[:space:]=][[:space:]])(?=[[:space:]]*+[^\\.])",
              "beginCaptures": {
                "1": {
                  "name": "markup.inserted keyword.control.less message.error"
                }
              },
              "endCaptures": {
                "1": { "name": "storage.type" }
              },
              "patterns": [{ "include": "#value-expression-atomic-with-paths" }]
            }
          ]
        }
      ]
    },
    "module-item-let-value-param-module": {
      "comment": "FIXME: merge with pattern-parens",
      "begin": "\\([[:space:]]*(?=\\b(module)\\b)",
      "end": "\\)",
      "patterns": [
        {
          "begin": "\\b(module)\\b",
          "end": "(?=\\))",
          "beginCaptures": {
            "1": { "name": "keyword.other message.error" }
          },
          "patterns": [
            {
              "match": "\\b[[:upper:]][[:word:]]*\\b",
              "name": "support.class entity.name.class"
            }
          ]
        }
      ]
    },
    "module-item-let-value-param-type": {
      "comment": "FIXME: merge with pattern-parens",
      "begin": "\\((?=\\b(type)\\b)",
      "end": "\\)",
      "patterns": [
        {
          "begin": "\\b(type)\\b",
          "end": "(?=\\))",
          "beginCaptures": {
            "1": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
            }
          },
          "patterns": [{ "include": "#pattern-variable" }]
        }
      ]
    },
    "module-item-let-value-rec": {
      "begin": "(?:\\G|^)[[:space:]]*\\b(rec)\\b",
      "end": "(?=[;}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.control storage.modifier message.error" }
      },
      "patterns": [{ "include": "#module-item-let-value-bind-name-params-type-body" }]
    },
    "module-item-module": {
      "comment": "NOTE: this is to support the let-module case without the let prefix",
      "begin": "\\b(module)\\b[[:space:]]*(?!\\b(type)\\b|$)",
      "end": "(;)|(?=}|\\b(class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "storage.type message.error" }
      },
      "endCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [
        { "include": "#module-item-let-module-and" },
        { "include": "#module-item-let-module-rec" },
        { "include": "#module-item-let-module-bind-name-params-type-body" }
      ]
    },
    "module-item-module-type": {
      "begin": "\\b(module)\\b[[:space:]]*(?=\\b(type)\\b|$)",
      "end": "(;)|(?=}|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.control message.error" }
      },
      "endCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [
        {
          "begin": "(?:\\G|^)[[:space:]]*\\b(type)\\b",
          "end": "(?==)",
          "beginCaptures": {
            "1": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
            }
          },
          "patterns": [
            { "include": "#comment" },
            {
              "match": "([[:upper:]][[:word:]]*)",
              "captures": {
                "1": { "name": "support.class entity.name.class" }
              }
            }
          ]
        },
        {
          "begin": "(=)",
          "end": "(?=;)",
          "beginCaptures": {
            "1": { "name": "keyword.control.less" }
          },
          "patterns": [{ "include": "#comment" }, { "include": "#signature-expression" }]
        }
      ]
    },
    "module-item-open": {
      "begin": "\\b(open)\\b",
      "end": "(;)|(?=}|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.control.open" }
      },
      "endCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [{ "include": "#comment" }, { "include": "#module-path-simple" }]
    },
    "module-item-type": {
      "comment": "FIXME: the semi-colon is optional so we can re-use this for hover, which does not print the trailing ;",
      "begin": "\\b(type)\\b",
      "end": "(;)|(?=[\\)}]|\\b(class|exception|external|include|inherit|let|method|nonrec|open|private|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.other" }
      },
      "endCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [
        { "include": "#module-item-type-and" },
        { "include": "#module-item-type-constraint" },
        { "include": "#module-item-type-bind" }
      ]
    },
    "module-item-type-and": {
      "comment": "FIXME: the optional `type` is for module constraints",
      "begin": "\\b(and)\\b([[:space:]]*type)?",
      "end": "(?=[;\\)}]|\\b(class|exception|external|include|inherit|let|method|nonrec|open|private|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.other" },
        "2": {
          "name": "entity.other.attribute-name.css constant.language constant.numeric"
        }
      },
      "patterns": [{ "include": "#module-item-type-bind-name-tyvars-body" }]
    },
    "module-item-type-bind": {
      "comment": "FIXME: only allow module paths before type variables",
      "patterns": [
        { "include": "#module-item-type-bind-nonrec" },
        { "include": "#module-item-type-bind-name-tyvars-body" }
      ]
    },
    "module-item-type-bind-body": {
      "comment": "FIXME: parsing",
      "begin": "(\\+?=)",
      "end": "(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.control.less" }
      },
      "patterns": [{ "include": "#module-item-type-bind-body-item" }]
    },
    "module-item-type-bind-body-item": {
      "patterns": [
        {
          "match": "(=)(?!>)|\\b(private)\\b",
          "captures": {
            "1": { "name": "keyword.control.less" },
            "2": {
              "name": "variable.other.class.js variable.interpolation storage.modifier message.error"
            }
          }
        },
        {
          "comment": "FIXME: specialized version of variant rule that also scans for (",
          "match": "\\b([[:upper:]][[:word:]]*)\\b(?![[:space:]]*[\\.\\(])",
          "captures": {
            "1": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
            }
          }
        },
        {
          "begin": "(\\.\\.)",
          "end": "(?=[;}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
          "beginCaptures": {
            "1": { "name": "keyword.control.less" }
          }
        },
        {
          "begin": "(\\|)(?![#\\-:!?.@*/&%^+<=>|~$\\\\])[[:space:]]*",
          "end": "(?=[;\\)}]|\\|(?![#\\-:!?.@*/&%^+<=>|~$\\\\])|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
          "beginCaptures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            }
          },
          "patterns": [
            { "include": "#value-expression-constructor" },
            {
              "match": "([:])|\\b(of)\\b",
              "captures": {
                "1": { "name": "keyword.control.less" },
                "2": { "name": "keyword.other" }
              }
            },
            { "include": "#type-expression" }
          ]
        },
        {
          "comment": "FIXME: remove this once the pretty printer no longer outputs 'of'",
          "match": "(:)|(\\|(?![#\\-:!?.@*/&%^+<=>|~$\\\\]))|\\b(of)\\b",
          "captures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            },
            "2": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            },
            "3": { "name": "keyword.other" }
          }
        },
        { "include": "#type-expression" }
      ]
    },
    "module-item-type-bind-name-tyvars": {
      "begin": "(?<=\\G|^|\\.)[[:space:]]*\\b([[:lower:]][[:word:]]*)\\b",
      "end": "(?=\\+?=|[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "entity.name.function" }
      },
      "patterns": [
        { "include": "#comment" },
        { "include": "#attribute" },
        {
          "match": "_",
          "name": "comment"
        },
        {
          "comment": "FIXME: add separate type-variable rule",
          "match": "([+\\-])?(?:(_)|(')([[:lower:]][[:word:]]*)\\b)(?!\\.[[:upper:]])",
          "captures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            },
            "2": { "name": "comment" },
            "3": { "name": "comment" },
            "4": {
              "name": "variable.parameter string.other.link variable.language"
            }
          }
        }
      ]
    },
    "module-item-type-bind-name-tyvars-body": {
      "begin": "(?=(\\G|^)[[:space:]]*\\b[[:alpha:]])",
      "end": "(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
      "patterns": [
        { "include": "#module-path-simple-prefix" },
        { "include": "#module-item-type-bind-name-tyvars" },
        { "include": "#module-item-type-bind-body" }
      ]
    },
    "module-item-type-bind-nonrec": {
      "begin": "(?:\\G|^)[[:space:]]*\\b(nonrec)\\b",
      "end": "(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.control storage.modifier message.error" }
      },
      "patterns": [{ "include": "#module-item-type-bind-name-tyvars-body" }]
    },
    "module-item-type-constraint": {
      "comment": "FIXME: proper parsing",
      "begin": "\\b(constraint)\\b",
      "end": "(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation storage.modifier message.error"
        }
      },
      "patterns": [
        {
          "comment": "FIXME: add separate type-variable rule",
          "match": "([+\\-])?(')([_[:lower:]][[:word:]]*)\\b(?!\\.[[:upper:]])",
          "captures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            },
            "2": { "name": "comment" },
            "3": {
              "name": "variable.parameter string.other.link variable.language"
            }
          }
        },
        {
          "match": "=",
          "name": "keyword.control.less"
        },
        { "include": "#type-expression" }
      ]
    },
    "object-item": {
      "begin": "\\G|(;)",
      "end": "(?=[;}]|\\b(class|constraint|exception|external|include|let|module|nonrec|open|private|type|val|with)\\b)",
      "beginCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [{ "include": "#class-item-method" }]
    },
    "operator": {
      "patterns": [{ "include": "#operator-infix" }, { "include": "#operator-prefix" }]
    },
    "operator-infix": {
      "patterns": [
        {
          "match": ";",
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        },
        { "include": "#operator-infix-assign" },
        { "include": "#operator-infix-builtin" },
        { "include": "#operator-infix-custom" },
        { "comment": "#operator-infix-custom-hash" }
      ]
    },
    "operator-infix-assign": {
      "match": "(?<![#\\-:!?.@*/&%^+<=>|~$\\\\])(=)(?![#\\-:!?.@*/&%^+<=>|~$\\\\])",
      "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control.less message.error"
    },
    "operator-infix-builtin": {
      "match": ":=",
      "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control.less message.error"
    },
    "operator-infix-custom": {
      "match": "(?:(?<![#\\-:!?.@*/&%^+<=>|~$\\\\])((<>))(?![#\\-:!?.@*/&%^+<=>|~$\\\\]))|([#\\-@*/&%^+<=>$\\\\][#\\-:!?.@*/&%^+<=>|~$\\\\]*|[|][#\\-:!?.@*/&%^+<=>|~$\\\\]+)",
      "captures": {
        "1": { "comment": "meta.separator" },
        "2": { "name": "punctuation.definition.tag.begin.js" },
        "3": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      }
    },
    "operator-infix-custom-hash": {
      "match": "#[\\-:!?.@*/&%^+<=>|~$]+",
      "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
    },
    "operator-prefix": {
      "patterns": [
        { "include": "#operator-prefix-bang" },
        { "include": "#operator-prefix-label-token" }
      ]
    },
    "operator-prefix-bang": {
      "match": "![\\-:!?.@*/&%^+<=>|~$]*",
      "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
    },
    "operator-prefix-label-token": {
      "match": "[?~][\\-:!?.@*/&%^+<=>|~$]+",
      "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
    },
    "pattern": {
      "patterns": [
        { "include": "#attribute" },
        { "include": "#comment" },
        { "include": "#pattern-atomic" },
        {
          "match": "[[:space:]]*+(?:(\\|(?![#\\-:!?.@*/&%^+<=>|~$\\\\]))|\\b(as)\\b|(\\.\\.\\.?))[[:space:]]*+",
          "captures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            },
            "2": { "name": "keyword.other" },
            "3": { "name": "keyword.control" }
          }
        }
      ]
    },
    "pattern-atomic": {
      "patterns": [
        {
          "match": "\\b(exception)\\b",
          "name": "keyword.other"
        },
        { "include": "#value-expression-literal" },
        { "include": "#module-path-simple-prefix" },
        { "include": "#pattern-list-or-array" },
        { "include": "#pattern-record" },
        { "include": "#pattern-variable" },
        { "include": "#pattern-parens" }
      ]
    },
    "pattern-guard": {
      "begin": "\\b(when)\\b",
      "end": "(?==>)",
      "beginCaptures": {
        "1": { "name": "keyword.other" }
      },
      "patterns": [{ "include": "#value-expression" }]
    },
    "pattern-list-or-array": {
      "begin": "(\\[\\|?)(?![@%])",
      "end": "(\\|?\\])",
      "beginCaptures": {
        "1": {
          "name": "entity.other.attribute-name.css constant.language constant.numeric"
        }
      },
      "endCaptures": {
        "1": {
          "name": "entity.other.attribute-name.css constant.language constant.numeric"
        }
      },
      "patterns": [
        { "include": "#value-expression-literal-list-or-array-separator" },
        { "include": "#pattern" }
      ]
    },
    "pattern-parens": {
      "begin": "(?=\\()",
      "end": "\\)|(?=[;}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
      "patterns": [{ "include": "#pattern-parens-lhs" }, { "include": "#type-annotation-rhs" }]
    },
    "pattern-parens-lhs": {
      "begin": "\\(|(,)",
      "end": "(?=(?:[,:\\)]))|(?=[;}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [{ "include": "#pattern" }]
    },
    "record-path": {
      "begin": "\\b[[:lower:]][[:word:]]*\\b",
      "end": "(?=[^[:space:]\\.])(?!/\\*)",
      "patterns": [{ "include": "#comment" }, { "include": "#record-path-suffix" }]
    },
    "record-path-suffix": {
      "begin": "(\\.)",
      "end": "(\\))|\\b([[:upper:]][[:word:]]*)\\b|\\b([[:lower:]][[:word:]]*)\\b|(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|with)\\b)",
      "beginCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "endCaptures": {
        "1": { "name": "keyword.control" },
        "2": { "name": "support.class entity.name.class" },
        "3": {
          "name": "markup.inserted constant.language support.property-value entity.name.filename"
        }
      },
      "patterns": [
        { "include": "#comment" },
        {
          "begin": "([\\(])",
          "end": "(?=[\\)])",
          "beginCaptures": {
            "1": { "name": "keyword.control" }
          },
          "patterns": [
            { "include": "#comment" },
            {
              "match": "\\b([[:lower:]][[:word:]]*)\\b(?=[^\\)]*([\\.]))",
              "captures": {
                "1": {
                  "name": "markup.inserted constant.language support.property-value entity.name.filename"
                },
                "2": { "name": "keyword.other" }
              }
            },
            {
              "match": "([\\.])",
              "name": "keyword.control.less"
            },
            {
              "match": "\\b([[:lower:]][[:word:]]*)\\b[[:space:]]*",
              "captures": {
                "1": {
                  "name": "variable.parameter string.other.link variable.language"
                }
              }
            },
            { "include": "#value-expression" }
          ]
        }
      ]
    },
    "pattern-record": {
      "begin": "{",
      "end": "}",
      "patterns": [{ "include": "#comment" }, { "include": "#pattern-record-item" }]
    },
    "pattern-record-field": {
      "begin": "\\b([_][[:word:]]*)\\b|\\b([[:lower:]][[:word:]]*)\\b",
      "end": "(,)|(?=})",
      "beginCaptures": {
        "1": { "name": "comment" },
        "2": {
          "name": "markup.inserted constant.language support.property-value entity.name.filename"
        }
      },
      "endCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [
        { "include": "#comment" },
        {
          "begin": "\\G(:)",
          "end": "(?=[,}])",
          "beginCaptures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            }
          },
          "patterns": [{ "include": "#pattern" }]
        }
      ]
    },
    "pattern-record-item": {
      "patterns": [
        { "include": "#module-path-simple-prefix" },
        { "include": "#pattern-record-field" }
      ]
    },
    "pattern-variable": {
      "patterns": [
        {
          "match": "\\b(_(?:[[:lower:]][[:word:]]*)?)\\b(?!\\.[[:upper:]])",
          "captures": {
            "1": { "name": "comment" }
          }
        },
        {
          "match": "\\b([[:lower:]][[:word:]]*)\\b(?!\\.[[:upper:]])",
          "captures": {
            "1": { "name": "variable.language string.other.link" }
          }
        }
      ]
    },
    "signature-expression": {
      "patterns": [
        {
          "comment": "FIXME: scan for :upper: to disambiguate type/signature in hover",
          "begin": "(?=\\([[:space:]]*[[:upper:]][[:word:]]*[[:space:]]*:)",
          "end": "(?=[;])",
          "patterns": [
            {
              "begin": "(?=\\()",
              "end": "(?=[;]|=>)",
              "patterns": [{ "include": "#module-item-let-module-param" }]
            },
            {
              "begin": "(=>)",
              "end": "(?=[;\\(])",
              "beginCaptures": {
                "1": { "name": "markup.inserted keyword.control.less" }
              },
              "patterns": [{ "include": "#structure-expression" }]
            }
          ]
        },
        {
          "begin": "\\b(module)\\b[[:space:]]*\\b(type)\\b([[:space:]]*\\b(of)\\b)?",
          "end": "(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
          "beginCaptures": {
            "1": {
              "name": "markup.inserted keyword.other variable.other.readwrite.instance"
            },
            "2": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
            },
            "3": {
              "name": "markup.inserted keyword.other variable.other.readwrite.instance"
            }
          },
          "patterns": [
            { "include": "#comment" },
            { "include": "#module-path-simple" },
            {
              "match": "\\b([[:upper:]][[:word:]]*)\\b",
              "name": "support.class entity.name.class"
            }
          ]
        },
        { "include": "#signature-expression-constraints" },
        { "include": "#structure-expression" }
      ]
    },
    "signature-expression-constraints": {
      "begin": "(?=\\b(with))",
      "end": "(?=[;\\)}]|\\b(class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|val)\\b)",
      "patterns": [
        {
          "begin": "\\b(and|with)\\b",
          "end": "(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|val|with)\\b)",
          "beginCaptures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation storage.modifier message.error"
            }
          },
          "patterns": [
            { "include": "#comment" },
            {
              "comment": "FIXME: special version of #module-item-type with non-consuming `;`. Atom seems to need this to work.",
              "begin": "\\b(type)\\b",
              "end": "(?=[;\\)}]|\\b(class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|val|with)\\b)",
              "beginCaptures": {
                "1": {
                  "name": "entity.other.attribute-name.css constant.language constant.numeric"
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              "patterns": [
                { "include": "#module-item-type-and" },
                { "include": "#module-item-type-constraint" },
                { "include": "#module-item-type-bind" }
              ]
            },
            {
              "begin": "(?=\\b(module)\\b)",
              "end": "(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|val|with)\\b)",
              "patterns": [
                {
                  "begin": "\\b(module)\\b",
                  "end": "(?=:?=|[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|type|val|with)\\b)",
                  "beginCaptures": {
                    "1": {
                      "name": "markup.inserted keyword.control storage.type variable.other.readwrite.instance"
                    }
                  },
                  "patterns": [
                    { "include": "#comment" },
                    { "include": "#module-path-simple" },
                    {
                      "match": "[[:upper:]][[:word:]]*",
                      "name": "support.class entity.name.class"
                    }
                  ]
                },
                {
                  "begin": "(:=)|(=)",
                  "end": "(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|type|val|with)\\b)",
                  "beginCaptures": {
                    "1": {
                      "name": "markup.inserted keyword.control.less message.error"
                    },
                    "2": { "name": "markup.inserted keyword.control.less" }
                  },
                  "patterns": [{ "include": "#structure-expression" }]
                }
              ]
            }
          ]
        }
      ]
    },
    "structure-expression": {
      "patterns": [
        { "include": "#comment" },
        {
          "comment": "FIXME: scan for :upper: or `val` to disambiguate types from signatures for hover",
          "begin": "\\((?=[[:space:]]*(\\b(val)\\b|[^'\\[<[:lower:]]))",
          "end": "\\)|(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|with)\\b)",
          "patterns": [
            { "include": "#comment" },
            {
              "comment": "FIXME: might need to refactor this or include more expressions",
              "include": "#structure-expression-block"
            },
            {
              "begin": "\\b(val)\\b",
              "end": "(?=\\))|(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
              "beginCaptures": {
                "1": { "name": "keyword.other" }
              },
              "patterns": [
                { "include": "#comment" },
                {
                  "match": "\\b([[:lower:]][[:word:]]*)\\b",
                  "name": "support.class entity.name.class"
                }
              ]
            },
            { "include": "#module-path-simple" },
            {
              "begin": "(:)",
              "end": "(?=[\\)])|(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val)\\b)",
              "beginCaptures": {
                "1": {
                  "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
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              },
              "patterns": [{ "include": "#signature-expression" }]
            }
          ]
        },
        { "include": "#module-path-simple" },
        { "include": "#structure-expression-block" }
      ]
    },
    "structure-expression-block": {
      "begin": "{",
      "end": "}",
      "patterns": [{ "include": "#structure-expression-block-item" }]
    },
    "structure-expression-block-item": {
      "patterns": [
        { "include": "#attribute" },
        { "include": "#comment" },
        { "include": "#module-item-exception" },
        { "include": "#module-item-external" },
        { "include": "#module-item-include" },
        { "include": "#module-item-let" },
        { "include": "#module-item-class-type" },
        { "include": "#module-item-module-type" },
        { "include": "#module-item-module" },
        { "include": "#module-item-open" },
        { "include": "#module-item-type" }
      ]
    },
    "type-annotation-rhs": {
      "begin": "(?<![#\\-:!?.@*/&%^+<=>|~$\\\\])([:])(?![#\\-:!?.@*/&%^+<=>|~$\\\\])",
      "end": "(?=\\))|(?=[,;}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [{ "include": "#type-expression" }]
    },
    "type-expression": {
      "patterns": [
        {
          "match": "([\\.])",
          "name": "entity.name.function"
        },
        { "include": "#type-expression-atomic" },
        { "include": "#type-expression-arrow" }
      ]
    },
    "type-expression-atomic": {
      "patterns": [
        { "include": "#attribute" },
        { "include": "#comment" },
        { "include": "#module-path-extended-prefix" },
        { "include": "#type-expression-label" },
        {
          "match": "\\b(as)\\b",
          "name": "variable.other.class.js variable.interpolation storage.modifier message.error"
        },
        { "include": "#type-expression-constructor" },
        { "include": "#type-expression-object" },
        { "include": "#type-expression-parens" },
        { "include": "#type-expression-polymorphic-variant" },
        { "include": "#type-expression-record" },
        { "include": "#type-expression-variable" }
      ]
    },
    "type-expression-arrow": {
      "match": "=>",
      "name": "markup.inserted keyword.control.less"
    },
    "type-expression-constructor": {
      "match": "(_)(?![[:alnum:]])|\\b([_[:lower:]][[:word:]]*)\\b(?!\\.[[:upper:]])",
      "captures": {
        "1": { "name": "comment" },
        "2": { "name": "support.type string.regexp" }
      }
    },
    "type-expression-label": {
      "begin": "\\b([_[:lower:]][[:word:]]*)\\b(::)",
      "end": "(?<==>)",
      "beginCaptures": {
        "1": {
          "name": "markup.inserted constant.language support.property-value entity.name.filename"
        },
        "2": { "name": "keyword.control" }
      },
      "patterns": [
        { "include": "#type-expression" },
        {
          "match": "(\\?)",
          "captures": {
            "1": { "name": "keyword.control.less" }
          }
        }
      ]
    },
    "type-expression-object": {
      "comment": "FIXME: separate sub-rules",
      "begin": "(<)",
      "end": "(>)",
      "captures": {
        "1": { "name": "entity.name.function" }
      },
      "patterns": [
        {
          "begin": "(\\.\\.)",
          "end": "(?=>)",
          "beginCaptures": {
            "1": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
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          }
        },
        {
          "comment": "FIXME: method item",
          "begin": "(?=[_[:lower:]])",
          "end": "(,)|(?=>)",
          "endCaptures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            }
          },
          "patterns": [
            {
              "comment": "FIXME: method name",
              "begin": "(?=[_[:lower:]])",
              "end": "(?=:)",
              "patterns": [
                {
                  "match": "\\b([_[:lower:]][[:word:]]*)\\b",
                  "captures": {
                    "1": {
                      "name": "markup.inserted constant.language support.property-value entity.name.filename"
                    }
                  }
                }
              ]
            },
            {
              "comment": "FIXME: method type",
              "begin": "(:)",
              "end": "(?=[,>])",
              "beginCaptures": {
                "1": {
                  "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
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              },
              "patterns": [{ "include": "#type-expression" }]
            }
          ]
        }
      ]
    },
    "type-expression-parens": {
      "comment": "FIXME: proper tuple types",
      "begin": "\\(",
      "end": "\\)",
      "patterns": [
        {
          "begin": "\\b(module)\\b",
          "end": "(?=[\\)])",
          "beginCaptures": {
            "1": { "name": "keyword.other message.error" }
          },
          "patterns": [
            { "include": "#module-path-extended" },
            { "include": "#signature-expression-constraints" }
          ]
        },
        {
          "match": ",",
          "name": "keyword.control.less"
        },
        { "include": "#type-expression" }
      ]
    },
    "type-expression-polymorphic-variant": {
      "comment": "FIXME: proper parsing",
      "begin": "(\\[)([<>])?",
      "end": "(\\])",
      "captures": {
        "1": { "name": "entity.name.function" },
        "2": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
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      },
      "patterns": [
        {
          "begin": "(\\|)?(?![#\\-:!?.@*/&%^+<=>|~$\\\\])[[:space:]]*",
          "end": "(?=[;)}\\]]|\\|(?![#\\-:!?.@*/&%^+<=>|~$\\\\])|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
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            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            }
          },
          "patterns": [
            { "include": "#value-expression-constructor" },
            {
              "match": "([:])|\\b(of)\\b|([&])",
              "captures": {
                "1": { "name": "keyword.control.less" },
                "2": { "name": "keyword.other" },
                "3": {
                  "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
                }
              }
            },
            { "include": "#value-expression-constructor-polymorphic" },
            { "include": "#type-expression" }
          ]
        }
      ]
    },
    "type-expression-record": {
      "begin": "{",
      "end": "}",
      "patterns": [{ "include": "#type-expression-record-item" }]
    },
    "type-expression-record-field-sans-modifier": {
      "begin": "\\b([_[:lower:]][[:word:]]*)\\b",
      "end": "(,)|(?=[,}])",
      "beginCaptures": {
        "1": {
          "name": "markup.inserted constant.language support.property-value entity.name.filename"
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      },
      "endCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
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      },
      "patterns": [
        { "include": "#comment" },
        {
          "begin": "(:)",
          "end": "(?=[,}])",
          "beginCaptures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            }
          },
          "patterns": [{ "include": "#type-expression" }]
        }
      ]
    },
    "type-expression-record-field": {
      "patterns": [
        {
          "begin": "\\b(mutable)\\b",
          "end": "(?<=[,])|(?=})",
          "beginCaptures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation storage.modifier message.error"
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          },
          "patterns": [{ "include": "#type-expression-record-field-sans-modifier" }]
        },
        { "include": "#type-expression-record-field-sans-modifier" }
      ]
    },
    "type-expression-record-item": {
      "patterns": [
        { "include": "#comment" },
        { "include": "#module-path-simple-prefix" },
        { "include": "#type-expression-record-field" }
      ]
    },
    "type-expression-variable": {
      "match": "(')([_[:lower:]][[:word:]]*)\\b(?!\\.[[:upper:]])",
      "captures": {
        "1": { "name": "comment" },
        "2": {
          "name": "variable.parameter string.other.link variable.language"
        }
      }
    },
    "value-expression": {
      "patterns": [
        { "include": "#attribute" },
        { "include": "#comment" },
        { "include": "#extension-node" },
        { "include": "#jsx" },
        { "include": "#operator" },
        { "include": "#value-expression-builtin" },
        { "include": "#value-expression-if-then-else" },
        { "include": "#value-expression-atomic" },
        { "include": "#module-path-simple-prefix" },
        {
          "match": "[:?]",
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        },
        { "include": "#record-path" }
      ]
    },
    "value-expression-atomic": {
      "patterns": [
        { "include": "#value-expression-literal" },
        { "include": "#value-expression-literal-list-or-array" },
        { "include": "#value-expression-for" },
        { "include": "#value-expression-fun" },
        { "include": "#value-expression-block-or-record-or-object" },
        { "include": "#value-expression-label" },
        { "include": "#value-expression-parens" },
        { "include": "#value-expression-switch" },
        { "include": "#value-expression-try" },
        { "include": "#value-expression-while" }
      ]
    },
    "value-expression-atomic-with-paths": {
      "patterns": [
        { "include": "#value-expression-atomic" },
        { "include": "#module-path-simple-prefix" },
        { "include": "#record-path-suffix" }
      ]
    },
    "value-expression-block": {
      "begin": "{",
      "end": "}",
      "patterns": [{ "include": "#value-expression-block-item" }]
    },
    "value-expression-block-item": {
      "patterns": [
        { "include": "#module-item-let" },
        { "include": "#module-item-open" },
        { "include": "#value-expression" }
      ]
    },
    "value-expression-block-look": {
      "begin": "(?![[:space:]]*($|\\.\\.\\.|([[:upper:]][[:word:]]*\\.)*([[:lower:]][[:word:]]*)[[:space:]]*(?:,|:(?![=]))))",
      "end": "(?=})",
      "patterns": [{ "include": "#value-expression-block-item" }]
    },
    "value-expression-block-or-record-or-object": {
      "begin": "{",
      "end": "}",
      "patterns": [
        { "include": "#comment" },
        { "include": "#module-path-simple-prefix" },
        { "include": "#value-expression-object-look" },
        { "include": "#value-expression-record-look" },
        { "include": "#value-expression-block-look" }
      ]
    },
    "value-expression-builtin": {
      "match": "\\b(assert|decr|failwith|fprintf|ignore|incr|land|lazy|lor|lsl|lsr|lxor|mod|new|not|printf|ref)\\b|\\b(raise)\\b",
      "captures": {
        "1": { "name": "keyword.control message.error" },
        "2": { "name": "keyword.control.trycatch" }
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    },
    "value-expression-constructor": {
      "match": "\\b([[:upper:]][[:word:]]*)\\b(?![[:space:]]*[\\.])",
      "captures": {
        "1": {
          "name": "entity.other.attribute-name.css constant.language constant.numeric"
        }
      }
    },
    "value-expression-constructor-polymorphic": {
      "match": "(`)([[:alpha:]][[:word:]]*)\\b(?!\\.)",
      "captures": {
        "1": {
          "name": "constant.other.symbol keyword.control.less variable.parameter"
        },
        "2": {
          "name": "entity.other.attribute-name.css constant.language constant.numeric"
        }
      }
    },
    "value-expression-for": {
      "begin": "(?=\\b(for)\\b)",
      "end": "(?<=})|(?=[;]|\\b(and|as|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|rec|type|val|with)\\b)",
      "patterns": [
        { "include": "#value-expression-for-head" },
        { "include": "#value-expression-block" }
      ]
    },
    "value-expression-for-head": {
      "begin": "(?=\\b(for)\\b)",
      "end": "(?={)|(?=[;]|\\b(and|as|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|rec|type|val|with)\\b)",
      "patterns": [
        {
          "begin": "\\b(for)\\b",
          "end": "(?=\\b(in)\\b)|(?=[;]|\\b(and|as|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|rec|type|val|with)\\b)",
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          },
          "patterns": [{ "include": "#comment" }, { "include": "#pattern-variable" }]
        },
        {
          "begin": "\\b(in)\\b",
          "end": "(?=\\b(to)\\b)|(?=[;]|\\b(and|as|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|rec|type|val|with)\\b)",
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          "patterns": [
            { "include": "#comment" },
            { "include": "#value-expression-atomic-with-paths" }
          ]
        },
        {
          "begin": "\\b(to)\\b",
          "end": "(?={)|(?=[;]|\\b(and|as|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|rec|type|val|with)\\b)",
          "beginCaptures": {
            "1": { "name": "keyword.control.loop" }
          },
          "patterns": [
            { "include": "#comment" },
            { "include": "#value-expression-atomic-with-paths" }
          ]
        },
        { "include": "#value-expression-block" }
      ]
    },
    "value-expression-fun": {
      "begin": "\\b(fun)\\b",
      "end": "(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.control" }
      },
      "patterns": [
        { "include": "#value-expression-fun-pattern-match-rule-lhs" },
        { "include": "#value-expression-fun-pattern-match-rule-rhs" }
      ]
    },
    "value-expression-fun-pattern-match-rule-lhs": {
      "begin": "(?=\\|(?![#\\-:!?.@*/&%^+<=>|~$\\\\]))|(?<=fun)",
      "end": "(\\|(?![#\\-:!?.@*/&%^+<=>|~$\\\\]))|(?==>)|(?=[;\\)}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
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      "beginCaptures": {
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      },
      "endCaptures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [{ "include": "#module-item-let-value-param" }]
    },
    "value-expression-fun-pattern-match-rule-rhs": {
      "begin": "(=>)",
      "end": "(?=[;\\)}]|\\|(?![#\\-:!?.@*/&%^+<=>|~$\\\\])|\\b(and)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.control.less" }
      },
      "patterns": [{ "include": "#value-expression" }]
    },
    "value-expression-if-then-else": {
      "begin": "\\b(if)\\b",
      "end": "(?=[;\\)\\]}])",
      "applyEndPatternLast": true,
      "beginCaptures": {
        "1": { "name": "keyword.control.conditional" }
      },
      "patterns": [
        { "include": "#comment" },
        {
          "begin": "\\b(else)\\b",
          "end": "(?=[;\\)\\]}])",
          "beginCaptures": {
            "1": { "name": "keyword.control.conditional" }
          },
          "patterns": [{ "include": "#value-expression" }]
        },
        { "include": "#value-expression-atomic-with-paths" }
      ]
    },
    "value-expression-lazy": {
      "comment": "FIXME",
      "match": "\\b(lazy)\\b",
      "captures": {
        "1": { "name": "keyword.other" }
      }
    },
    "value-expression-label": {
      "begin": "\\b([_[:lower:]][[:word:]]*)\\b[[:space:]]*(::)(\\?)?",
      "end": "(?![[:space:]])",
      "beginCaptures": {
        "1": {
          "name": "markup.inserted constant.language support.property-value entity.name.filename"
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        "2": { "name": "keyword.control" },
        "3": { "name": "storage.type" }
      },
      "patterns": [{ "include": "#value-expression" }]
    },
    "value-expression-literal": {
      "patterns": [
        { "include": "#value-expression-literal-boolean" },
        { "include": "#value-expression-literal-character" },
        { "include": "#value-expression-constructor" },
        { "include": "#value-expression-constructor-polymorphic" },
        { "include": "#value-expression-lazy" },
        { "include": "#value-expression-literal-numeric" },
        { "include": "#value-expression-literal-string" },
        { "include": "#value-expression-literal-unit" }
      ]
    },
    "value-expression-literal-boolean": {
      "match": "\\b(false|true)\\b",
      "name": "entity.other.attribute-name.css constant.language constant.numeric"
    },
    "value-expression-literal-character": {
      "match": "(')([[:space:]]|[[:graph:]]|\\\\[\\\\\"'ntbr]|\\\\[[:digit:]][[:digit:]][[:digit:]]|\\\\x[[:xdigit:]][[:xdigit:]]|\\\\o[0-3][0-7][0-7])(')",
      "name": "constant.character"
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    "value-expression-literal-list-or-array": {
      "begin": "(\\[\\|?)(?![@%])",
      "end": "(\\|?\\])",
      "beginCaptures": {
        "1": { "name": "constant.language.list" }
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      "endCaptures": {
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      },
      "patterns": [
        { "include": "#value-expression-literal-list-or-array-separator" },
        { "include": "#value-expression" },
        { "include": "#value-expression-literal-list-or-array" }
      ]
    },
    "value-expression-literal-list-or-array-separator": {
      "match": "(,)|(\\.\\.\\.)",
      "captures": {
        "1": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        },
        "2": { "name": "keyword.control" }
      }
    },
    "value-expression-literal-numeric": {
      "patterns": [
        {
          "match": "([-])?([[:digit:]][_[:digit:]]*)(?:(\\.)([_[:digit:]]*))?(?:([eE])([\\-\\+])?([[:digit:]][_[:digit:]]*))?(?![bBoOxX])",
          "captures": {
            "1": { "name": "keyword.control.less" },
            "2": { "name": "constant.numeric" },
            "3": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            },
            "4": { "name": "constant.numeric" },
            "5": { "name": "keyword.control.less" },
            "6": { "name": "keyword.control.less" },
            "7": { "name": "constant.numeric" }
          }
        },
        {
          "match": "([-])?(0[xX])([[:xdigit:]][_[:xdigit:]]*)(?:(\\.)([_[:xdigit:]]*))?(?:([pP])([\\-\\+])?([[:digit:]][_[:digit:]]*))?",
          "captures": {
            "1": { "name": "keyword.control.less" },
            "2": { "name": "keyword.control.less" },
            "3": { "name": "constant.numeric" },
            "4": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            },
            "5": { "name": "constant.numeric" },
            "6": { "name": "keyword.control.less" },
            "7": { "name": "keyword.control.less" },
            "8": { "name": "constant.numeric" }
          }
        },
        {
          "match": "([-])?(0[oO])([0-7][_0-7]*)",
          "captures": {
            "1": { "name": "keyword.control.less" },
            "2": { "name": "keyword.control.less" },
            "3": { "name": "constant.numeric" }
          }
        },
        {
          "match": "([-])?(0[bB])([0-1][_0-1]*)",
          "captures": {
            "1": { "name": "keyword.control.less" },
            "2": { "name": "keyword.control.less" },
            "3": { "name": "constant.numeric" }
          }
        }
      ]
    },
    "value-expression-literal-string": {
      "patterns": [
        {
          "begin": "(?<![[:alpha:]])js_expr(?!=[[:word:]])",
          "end": "(?<=\")|(\\|)([_[:lower:]]*)?(})|(?=[^[:space:]\"{])",
          "endCaptures": {
            "1": { "name": "keyword.control.flow message.error" },
            "2": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
            },
            "3": { "name": "keyword.control.flow message.error" }
          },
          "patterns": [
            {
              "begin": "({)([_[:lower:]]*)?(\\|)",
              "end": "(?=\\|\\2})",
              "comment": "meta.separator",
              "beginCaptures": {
                "1": { "name": "keyword.control.flow message.error" },
                "2": {
                  "name": "entity.other.attribute-name.css constant.language constant.numeric"
                },
                "3": { "name": "keyword.control.flow message.error" }
              },
              "patterns": [{ "include": "source.js" }]
            },
            {
              "begin": "\"",
              "end": "\"",
              "comment": "meta.separator",
              "patterns": [{ "include": "source.js" }]
            }
          ]
        },
        {
          "begin": "({)([_[:lower:]]*)?(\\|)",
          "end": "(\\|)(\\2)(})",
          "name": "string.double string.regexp",
          "beginCaptures": {
            "1": { "name": "keyword.control.flow message.error" },
            "2": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
            },
            "3": { "name": "keyword.control.flow message.error" }
          },
          "endCaptures": {
            "1": { "name": "keyword.control.flow message.error" },
            "2": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
            },
            "3": { "name": "keyword.control.flow message.error" }
          }
        },
        {
          "begin": "\"",
          "end": "\"",
          "name": "string.double string.regexp",
          "patterns": [{ "include": "#value-expression-literal-string-escape" }]
        }
      ]
    },
    "value-expression-literal-string-escape": {
      "patterns": [
        {
          "comment": "FIXME: make escapes into separate rule",
          "match": "\\\\[\\\\\"'ntbr ]|\\\\[[:digit:]][[:digit:]][[:digit:]]|\\\\x[[:xdigit:]][[:xdigit:]]|\\\\o[0-3][0-7][0-7]",
          "name": "constant.character"
        },
        {
          "match": "(@)([ \\[\\],.]|\\\\n)",
          "captures": {
            "1": { "name": "keyword.control.less" },
            "2": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
            }
          }
        },
        {
          "comment": "FIXME: don't highlight in external strings",
          "match": "(%)([ads])?",
          "captures": {
            "1": {
              "name": "entity.other.attribute-name.css constant.language constant.numeric"
            },
            "2": {
              "name": "variable.other.readwrite.instance string.other.link variable.language"
            }
          }
        }
      ]
    },
    "value-expression-literal-unit": {
      "match": "\\(\\)",
      "name": "constant.language.unit"
    },
    "value-expression-object-look": {
      "comment": "FIXME: is there a better way than listing all the keywords?",
      "begin": "(?:\\G|^)[[:space:]]*(?=method)",
      "end": "(?=})",
      "patterns": [{ "include": "#object-item" }]
    },
    "value-expression-parens": {
      "begin": "(?=\\()",
      "end": "(\\))|(?=[;}]|\\b(and|class|constraint|exception|external|include|inherit|let|method|module|nonrec|open|private|rec|type|val|with)\\b)",
      "endCaptures": {},
      "patterns": [
        { "include": "#condition-lhs" },
        { "include": "#value-expression-parens-lhs" },
        { "include": "#type-annotation-rhs" }
      ]
    },
    "value-expression-parens-lhs": {
      "begin": "(\\()|(,)",
      "end": "(?=[?,:\\)]|\\b(and|as|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "2": {
          "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
        }
      },
      "patterns": [
        {
          "begin": "\\b(module)\\b",
          "end": "(?=\\))",
          "beginCaptures": {
            "1": { "name": "keyword.other message.error" }
          },
          "patterns": [{ "include": "#module-path-simple" }]
        },
        { "include": "#value-expression" }
      ]
    },
    "value-expression-record-field": {
      "patterns": [
        {
          "begin": "(\\.\\.\\.)",
          "end": "(,)|(?=})",
          "beginCaptures": {
            "1": { "name": "keyword.control" }
          },
          "endCaptures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            }
          },
          "patterns": [
            { "include": "#comment" },
            { "include": "#module-path-simple-prefix" },
            {
              "begin": "(?=[\\.])",
              "end": "(?=[:,])",
              "patterns": [
                {
                  "match": "\\b[[:lower:]][[:word:]]*\\b",
                  "name": "markup.inserted constant.language support.property-value entity.name.filename"
                }
              ]
            },
            {
              "begin": "(:)",
              "end": "(?=[,}])",
              "beginCaptures": {
                "1": {
                  "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
                }
              },
              "patterns": [{ "include": "#value-expression" }]
            }
          ]
        },
        {
          "begin": "\\b[[:upper:]][[:word:]]*\\b",
          "end": "(,)|(?=})",
          "beginCaptures": {
            "1": { "name": "support.class entity.name.class" }
          },
          "endCaptures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            }
          },
          "patterns": [
            { "include": "#module-path-simple-prefix" },
            {
              "begin": "(:)",
              "end": "(?=[,}])",
              "beginCaptures": {
                "1": {
                  "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
                }
              },
              "patterns": [{ "include": "#value-expression" }]
            }
          ]
        },
        {
          "begin": "\\b([[:lower:]][[:word:]]*)\\b",
          "end": "(,)|(?=})",
          "beginCaptures": {
            "1": {
              "name": "markup.inserted constant.language support.property-value entity.name.filename"
            }
          },
          "endCaptures": {
            "1": {
              "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
            }
          },
          "patterns": [
            {
              "begin": "(:)",
              "end": "(?=[,}])",
              "beginCaptures": {
                "1": {
                  "name": "variable.other.class.js variable.interpolation keyword.operator keyword.control message.error"
                }
              },
              "patterns": [{ "include": "#value-expression" }]
            }
          ]
        }
      ]
    },
    "value-expression-record-item": {
      "patterns": [
        { "include": "#comment" },
        { "include": "#module-path-simple-prefix" },
        { "include": "#value-expression-record-field" }
      ]
    },
    "value-expression-switch": {
      "begin": "\\b(switch)\\b",
      "end": "(?<=})",
      "beginCaptures": {
        "1": { "name": "keyword.control.switch" }
      },
      "patterns": [
        { "include": "#value-expression-switch-head" },
        { "include": "#value-expression-switch-body" }
      ]
    },
    "value-expression-switch-body": {
      "begin": "{",
      "end": "}",
      "patterns": [
        { "include": "#comment" },
        { "include": "#value-expression-switch-pattern-match-rule" }
      ]
    },
    "value-expression-switch-head": {
      "begin": "(?<=switch)",
      "end": "(?<!switch)(?={)|(?=[;\\)]|\\b(and|as|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|rec|type|val|with)\\b)",
      "patterns": [
        { "include": "#comment" },
        {
          "begin": "\\G[[:space:]]*+{",
          "end": "}[[:space:]]*+",
          "patterns": [{ "include": "#value-expression-block-item" }]
        },
        { "include": "#value-expression-atomic-with-paths" }
      ]
    },
    "value-expression-switch-pattern-match-rule": {
      "patterns": [
        { "include": "#value-expression-switch-pattern-match-rule-lhs" },
        { "include": "#value-expression-switch-pattern-match-rule-rhs" }
      ]
    },
    "value-expression-switch-pattern-match-rule-lhs": {
      "begin": "(?=\\|(?![#\\-:!?.@*/&%^+<=>|~$\\\\]))",
      "end": "(?==>|[;\\)}])",
      "patterns": [{ "include": "#pattern-guard" }, { "include": "#pattern" }]
    },
    "value-expression-switch-pattern-match-rule-rhs": {
      "begin": "(=>)",
      "end": "(?=}|\\|(?![#\\-:!?.@*/&%^+<=>|~$\\\\]))",
      "beginCaptures": {
        "1": { "name": "keyword.control.less" }
      },
      "patterns": [{ "include": "#value-expression-block-item" }]
    },
    "value-expression-try": {
      "begin": "\\b(try)\\b",
      "end": "(?<=})|(?=[;\\)]|\\b(and|as|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.control.trycatch" }
      },
      "patterns": [
        { "include": "#value-expression-try-head" },
        { "include": "#value-expression-switch-body" }
      ]
    },
    "value-expression-try-head": {
      "begin": "(?<=try)",
      "end": "(?<!try)(?={)|(?=[;\\)]|\\b(and|as|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.control" }
      },
      "patterns": [
        { "include": "#comment" },
        {
          "begin": "\\G[[:space:]]*+{",
          "end": "}[[:space:]]*+",
          "patterns": [{ "include": "#value-expression-block-item" }]
        },
        { "include": "#value-expression-atomic-with-paths" }
      ]
    },
    "value-expression-while": {
      "begin": "\\b(while)\\b",
      "end": "(?<=})|(?=[;\\)]|\\b(and|as|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|rec|type|val|with)\\b)",
      "beginCaptures": {
        "1": { "name": "keyword.control.loop" }
      },
      "patterns": [
        { "include": "#value-expression-while-head" },
        { "include": "#value-expression-block" }
      ]
    },
    "value-expression-while-head": {
      "begin": "(?<=while)[[:space:]]*+",
      "end": "(?={)|(?=[;\\)]|\\b(and|as|class|constraint|exception|external|include|inherit|let|method|nonrec|open|private|rec|type|val|with)\\b)",
      "patterns": [{ "include": "#comment" }, { "include": "#value-expression-atomic-with-paths" }]
    },
    "value-expression-record-look": {
      "begin": "(?=\\.\\.\\.|([[:upper:]][[:word:]]*\\.)*([[:lower:]][[:word:]]*)[[:space:]]*[,:}])",
      "end": "(?=})",
      "patterns": [{ "include": "#value-expression-record-item" }]
    }
  }
}