{"version":3,"file":"index.mjs","names":[],"sources":["../../../../node_modules/unist-util-is/lib/index.js"],"sourcesContent":["/**\n * @import {Node, Parent} from 'unist'\n */\n\n/**\n * @template Fn\n * @template Fallback\n * @typedef {Fn extends (value: any) => value is infer Thing ? Thing : Fallback} Predicate\n */\n\n/**\n * @callback Check\n *   Check that an arbitrary value is a node.\n * @param {unknown} this\n *   The given context.\n * @param {unknown} [node]\n *   Anything (typically a node).\n * @param {number | null | undefined} [index]\n *   The node’s position in its parent.\n * @param {Parent | null | undefined} [parent]\n *   The node’s parent.\n * @returns {boolean}\n *   Whether this is a node and passes a test.\n *\n * @typedef {Record<string, unknown> | Node} Props\n *   Object to check for equivalence.\n *\n *   Note: `Node` is included as it is common but is not indexable.\n *\n * @typedef {Array<Props | TestFunction | string> | ReadonlyArray<Props | TestFunction | string> | Props | TestFunction | string | null | undefined} Test\n *   Check for an arbitrary node.\n *\n * @callback TestFunction\n *   Check if a node passes a test.\n * @param {unknown} this\n *   The given context.\n * @param {Node} node\n *   A node.\n * @param {number | undefined} [index]\n *   The node’s position in its parent.\n * @param {Parent | undefined} [parent]\n *   The node’s parent.\n * @returns {boolean | undefined | void}\n *   Whether this node passes the test.\n *\n *   Note: `void` is included until TS sees no return as `undefined`.\n */\n\n/**\n * Check if `node` is a `Node` and whether it passes the given test.\n *\n * @param {unknown} node\n *   Thing to check, typically `Node`.\n * @param {Test} test\n *   A check for a specific node.\n * @param {number | null | undefined} index\n *   The node’s position in its parent.\n * @param {Parent | null | undefined} parent\n *   The node’s parent.\n * @param {unknown} context\n *   Context object (`this`) to pass to `test` functions.\n * @returns {boolean}\n *   Whether `node` is a node and passes a test.\n */\nexport const is =\n  // Note: overloads in JSDoc can’t yet use different `@template`s.\n  /**\n   * @type {(\n   *   (<Condition extends ReadonlyArray<string>>(node: unknown, test: Condition, index?: number | null | undefined, parent?: Parent | null | undefined, context?: unknown) => node is Node & {type: Condition[number]}) &\n   *   (<Condition extends Array<string>>(node: unknown, test: Condition, index?: number | null | undefined, parent?: Parent | null | undefined, context?: unknown) => node is Node & {type: Condition[number]}) &\n   *   (<Condition extends string>(node: unknown, test: Condition, index?: number | null | undefined, parent?: Parent | null | undefined, context?: unknown) => node is Node & {type: Condition}) &\n   *   (<Condition extends Props>(node: unknown, test: Condition, index?: number | null | undefined, parent?: Parent | null | undefined, context?: unknown) => node is Node & Condition) &\n   *   (<Condition extends TestFunction>(node: unknown, test: Condition, index?: number | null | undefined, parent?: Parent | null | undefined, context?: unknown) => node is Node & Predicate<Condition, Node>) &\n   *   ((node?: null | undefined) => false) &\n   *   ((node: unknown, test?: null | undefined, index?: number | null | undefined, parent?: Parent | null | undefined, context?: unknown) => node is Node) &\n   *   ((node: unknown, test?: Test, index?: number | null | undefined, parent?: Parent | null | undefined, context?: unknown) => boolean)\n   * )}\n   */\n  (\n    /**\n     * @param {unknown} [node]\n     * @param {Test} [test]\n     * @param {number | null | undefined} [index]\n     * @param {Parent | null | undefined} [parent]\n     * @param {unknown} [context]\n     * @returns {boolean}\n     */\n    // eslint-disable-next-line max-params\n    function (node, test, index, parent, context) {\n      const check = convert(test)\n\n      if (\n        index !== undefined &&\n        index !== null &&\n        (typeof index !== 'number' ||\n          index < 0 ||\n          index === Number.POSITIVE_INFINITY)\n      ) {\n        throw new Error('Expected positive finite index')\n      }\n\n      if (\n        parent !== undefined &&\n        parent !== null &&\n        (!is(parent) || !parent.children)\n      ) {\n        throw new Error('Expected parent node')\n      }\n\n      if (\n        (parent === undefined || parent === null) !==\n        (index === undefined || index === null)\n      ) {\n        throw new Error('Expected both parent and index')\n      }\n\n      return looksLikeANode(node)\n        ? check.call(context, node, index, parent)\n        : false\n    }\n  )\n\n/**\n * Generate an assertion from a test.\n *\n * Useful if you’re going to test many nodes, for example when creating a\n * utility where something else passes a compatible test.\n *\n * The created function is a bit faster because it expects valid input only:\n * a `node`, `index`, and `parent`.\n *\n * @param {Test} test\n *   *   when nullish, checks if `node` is a `Node`.\n *   *   when `string`, works like passing `(node) => node.type === test`.\n *   *   when `function` checks if function passed the node is true.\n *   *   when `object`, checks that all keys in test are in node, and that they have (strictly) equal values.\n *   *   when `array`, checks if any one of the subtests pass.\n * @returns {Check}\n *   An assertion.\n */\nexport const convert =\n  // Note: overloads in JSDoc can’t yet use different `@template`s.\n  /**\n   * @type {(\n   *   (<Condition extends string>(test: Condition) => (node: unknown, index?: number | null | undefined, parent?: Parent | null | undefined, context?: unknown) => node is Node & {type: Condition}) &\n   *   (<Condition extends Props>(test: Condition) => (node: unknown, index?: number | null | undefined, parent?: Parent | null | undefined, context?: unknown) => node is Node & Condition) &\n   *   (<Condition extends TestFunction>(test: Condition) => (node: unknown, index?: number | null | undefined, parent?: Parent | null | undefined, context?: unknown) => node is Node & Predicate<Condition, Node>) &\n   *   ((test?: null | undefined) => (node?: unknown, index?: number | null | undefined, parent?: Parent | null | undefined, context?: unknown) => node is Node) &\n   *   ((test?: Test) => Check)\n   * )}\n   */\n  (\n    /**\n     * @param {Test} [test]\n     * @returns {Check}\n     */\n    function (test) {\n      if (test === null || test === undefined) {\n        return ok\n      }\n\n      if (typeof test === 'function') {\n        return castFactory(test)\n      }\n\n      if (typeof test === 'object') {\n        return Array.isArray(test)\n          ? anyFactory(test)\n          : // Cast because `ReadonlyArray` goes into the above but `isArray`\n            // narrows to `Array`.\n            propertiesFactory(/** @type {Props} */ (test))\n      }\n\n      if (typeof test === 'string') {\n        return typeFactory(test)\n      }\n\n      throw new Error('Expected function, string, or object as test')\n    }\n  )\n\n/**\n * @param {Array<Props | TestFunction | string>} tests\n * @returns {Check}\n */\nfunction anyFactory(tests) {\n  /** @type {Array<Check>} */\n  const checks = []\n  let index = -1\n\n  while (++index < tests.length) {\n    checks[index] = convert(tests[index])\n  }\n\n  return castFactory(any)\n\n  /**\n   * @this {unknown}\n   * @type {TestFunction}\n   */\n  function any(...parameters) {\n    let index = -1\n\n    while (++index < checks.length) {\n      if (checks[index].apply(this, parameters)) return true\n    }\n\n    return false\n  }\n}\n\n/**\n * Turn an object into a test for a node with a certain fields.\n *\n * @param {Props} check\n * @returns {Check}\n */\nfunction propertiesFactory(check) {\n  const checkAsRecord = /** @type {Record<string, unknown>} */ (check)\n\n  return castFactory(all)\n\n  /**\n   * @param {Node} node\n   * @returns {boolean}\n   */\n  function all(node) {\n    const nodeAsRecord = /** @type {Record<string, unknown>} */ (\n      /** @type {unknown} */ (node)\n    )\n\n    /** @type {string} */\n    let key\n\n    for (key in check) {\n      if (nodeAsRecord[key] !== checkAsRecord[key]) return false\n    }\n\n    return true\n  }\n}\n\n/**\n * Turn a string into a test for a node with a certain type.\n *\n * @param {string} check\n * @returns {Check}\n */\nfunction typeFactory(check) {\n  return castFactory(type)\n\n  /**\n   * @param {Node} node\n   */\n  function type(node) {\n    return node && node.type === check\n  }\n}\n\n/**\n * Turn a custom test into a test for a node that passes that test.\n *\n * @param {TestFunction} testFunction\n * @returns {Check}\n */\nfunction castFactory(testFunction) {\n  return check\n\n  /**\n   * @this {unknown}\n   * @type {Check}\n   */\n  function check(value, index, parent) {\n    return Boolean(\n      looksLikeANode(value) &&\n        testFunction.call(\n          this,\n          value,\n          typeof index === 'number' ? index : undefined,\n          parent || undefined\n        )\n    )\n  }\n}\n\nfunction ok() {\n  return true\n}\n\n/**\n * @param {unknown} value\n * @returns {value is Node}\n */\nfunction looksLikeANode(value) {\n  return value !== null && typeof value === 'object' && 'type' in value\n}\n"],"x_google_ignoreList":[0],"mappings":";;;;;;;;;;;;;;;;;;;AA4IA,MAAa,WAgBT,SAAU,MAAM;AACd,KAAI,SAAS,QAAQ,SAAS,KAAA,EAC5B,QAAO;AAGT,KAAI,OAAO,SAAS,WAClB,QAAO,YAAY,KAAK;AAG1B,KAAI,OAAO,SAAS,SAClB,QAAO,MAAM,QAAQ,KAAK,GACtB,WAAW,KAAK,GAGhB,kBAAwC,KAAM;AAGpD,KAAI,OAAO,SAAS,SAClB,QAAO,YAAY,KAAK;AAG1B,OAAM,IAAI,MAAM,+CAA+C;;;;;;AAQrE,SAAS,WAAW,OAAO;;CAEzB,MAAM,SAAS,EAAE;CACjB,IAAI,QAAQ;AAEZ,QAAO,EAAE,QAAQ,MAAM,OACrB,QAAO,SAAS,QAAQ,MAAM,OAAO;AAGvC,QAAO,YAAY,IAAI;;;;;CAMvB,SAAS,IAAI,GAAG,YAAY;EAC1B,IAAI,QAAQ;AAEZ,SAAO,EAAE,QAAQ,OAAO,OACtB,KAAI,OAAO,OAAO,MAAM,MAAM,WAAW,CAAE,QAAO;AAGpD,SAAO;;;;;;;;;AAUX,SAAS,kBAAkB,OAAO;CAChC,MAAM,gBAAwD;AAE9D,QAAO,YAAY,IAAI;;;;;CAMvB,SAAS,IAAI,MAAM;EACjB,MAAM,eACoB;;EAI1B,IAAI;AAEJ,OAAK,OAAO,MACV,KAAI,aAAa,SAAS,cAAc,KAAM,QAAO;AAGvD,SAAO;;;;;;;;;AAUX,SAAS,YAAY,OAAO;AAC1B,QAAO,YAAY,KAAK;;;;CAKxB,SAAS,KAAK,MAAM;AAClB,SAAO,QAAQ,KAAK,SAAS;;;;;;;;;AAUjC,SAAS,YAAY,cAAc;AACjC,QAAO;;;;;CAMP,SAAS,MAAM,OAAO,OAAO,QAAQ;AACnC,SAAO,QACL,eAAe,MAAM,IACnB,aAAa,KACX,MACA,OACA,OAAO,UAAU,WAAW,QAAQ,KAAA,GACpC,UAAU,KAAA,EACX,CACJ;;;AAIL,SAAS,KAAK;AACZ,QAAO;;;;;;AAOT,SAAS,eAAe,OAAO;AAC7B,QAAO,UAAU,QAAQ,OAAO,UAAU,YAAY,UAAU"}