export type CmpOp = "==" | "!=" | ">" | ">=" | "<" | "<=";
export type Literal = {
    type: "Lit";
    value: string | number | boolean | null;
};
export type LogicalOp = "and" | "or";
export type ArithOp = "+" | "-" | "*" | "/" | "%";
export type AssignOp = "=" | "|=" | "+=" | "//=";
export type Filter = {
    type: "Defs";
    defs: FuncDef[];
    body: Filter;
} | {
    type: "Identity";
} | {
    type: "RecDescent";
} | {
    type: "Field";
    name: string;
    optional: boolean;
} | {
    type: "Index";
    index: number;
    optional: boolean;
} | {
    type: "DynamicIndex";
    key: Filter;
    optional: boolean;
} | {
    type: "Slice";
    start: number | null;
    end: number | null;
} | {
    type: "Iter";
    optional: boolean;
} | {
    type: "Comma";
    left: Filter;
    right: Filter;
} | {
    type: "Pipe";
    left: Filter;
    right: Filter;
} | {
    type: "Bind";
    value: Filter;
    name: string;
    body: Filter;
} | {
    type: "Default";
    left: Filter;
    right: Filter;
} | {
    type: "Compare";
    op: CmpOp;
    left: Filter;
    right: Filter;
} | {
    type: "Logical";
    op: LogicalOp;
    left: Filter;
    right: Filter;
} | {
    type: "Arith";
    op: ArithOp;
    left: Filter;
    right: Filter;
} | {
    type: "If";
    cond: Filter;
    thenBranch: Filter;
    elseBranch: Filter;
} | {
    type: "Try";
    body: Filter;
    catchBody: Filter;
} | {
    type: "Assign";
    op: AssignOp;
    path: Filter;
    value: Filter;
} | {
    type: "Builtin0";
    name: Builtin0Name;
} | {
    type: "Has";
    key: string;
} | {
    type: "Select";
    cond: Filter;
} | {
    type: "Map";
    body: Filter;
} | {
    type: "Paths";
    pred: Filter;
} | {
    type: "Func";
    name: FuncName;
    args: Filter[];
} | {
    type: "UserCall";
    name: string;
    args: Filter[];
} | {
    type: "Del";
    path: Filter;
} | {
    type: "StringPredicate";
    kind: StringPredicateKind;
    arg: string;
} | {
    type: "StringTransform";
    kind: StringTransformKind;
    arg: string;
} | {
    type: "RegexReplace";
    kind: RegexReplaceKind;
    regex: string;
    replacement: string;
} | {
    type: "KeyAggregate";
    kind: KeyAggregateKind;
    key: Filter;
} | {
    type: "ArrayCons";
    elements: Filter[];
} | {
    type: "ObjectCons";
    pairs: Array<{
        key: string | Filter;
        value: Filter;
    }>;
} | {
    type: "StringInterp";
    parts: Array<string | {
        expr: Filter;
    }>;
} | {
    type: "FlattenN";
    depth: number;
} | {
    type: "Format";
    kind: FormatKind;
} | {
    type: "Generator";
    kind: "first" | "last";
    body: Filter;
} | {
    type: "Nth";
    index: Filter;
    body: Filter;
} | {
    type: "Limit";
    count: Filter;
    body: Filter;
} | {
    type: "Reduce";
    source: Filter;
    name: string;
    init: Filter;
    update: Filter;
} | {
    type: "Foreach";
    source: Filter;
    name: string;
    init: Filter;
    update: Filter;
    extract: Filter;
} | {
    type: "Var";
    name: string;
} | {
    type: "Lit";
    value: string | number | boolean | null;
};
export interface FuncDef {
    name: string;
    params: string[];
    body: Filter;
}
export type FormatKind = "csv" | "tsv" | "sh" | "uri" | "json" | "base64" | "base64d";
export type KeyAggregateKind = "sort_by" | "min_by" | "max_by" | "group_by";
export type StringPredicateKind = "startswith" | "endswith" | "test";
export type StringTransformKind = "split" | "join" | "ltrimstr" | "rtrimstr";
export type RegexReplaceKind = "sub" | "gsub";
export type FuncName = "contains" | "inside" | "index" | "rindex" | "indices" | "match" | "capture" | "scan" | "range" | "getpath" | "setpath" | "delpaths";
export type Builtin0Name = "length" | "keys" | "keys_unsorted" | "values" | "type" | "not" | "empty" | "add" | "min" | "max" | "sort" | "unique" | "reverse" | "to_entries" | "from_entries" | "flatten" | "ascii_downcase" | "ascii_upcase" | "tostring" | "tonumber" | "tojson" | "fromjson" | "explode" | "implode" | "arrays" | "objects" | "iterables" | "booleans" | "numbers" | "strings" | "nulls" | "scalars" | "paths" | "leaf_paths";
export declare const BUILTIN0_NAMES: ReadonlySet<string>;
export type AggregateKind = "length" | "sum" | "min" | "max" | "sort" | "unique" | "reverse" | "sort_by" | "min_by" | "max_by" | "group_by" | "to_entries" | "from_entries" | "flatten" | "ascii_downcase" | "ascii_upcase" | "tonumber" | "split" | "join" | "ltrimstr" | "rtrimstr" | "sub" | "gsub";
//# sourceMappingURL=ast.d.ts.map