js-yaml/dist/browser/js-yaml.esm.min.mjs.map

YAML 1.2 parser and serializer

{"version":3,"file":"js-yaml.esm.min.mjs","names":[],"sources":["../../src/tag.ts","../../src/tag/scalar/str.ts","../../src/tag/scalar/null_core.ts","../../src/tag/scalar/null_json.ts","../../src/tag/scalar/null_yaml11.ts","../../src/tag/scalar/bool_core.ts","../../src/tag/scalar/bool_json.ts","../../src/tag/scalar/bool_yaml11.ts","../../src/tag/scalar/int_core.ts","../../src/tag/scalar/int_json.ts","../../src/tag/scalar/int_yaml11.ts","../../src/tag/scalar/float_core.ts","../../src/tag/scalar/float_json.ts","../../src/tag/scalar/float_yaml11.ts","../../src/tag/scalar/merge.ts","../../src/tag/scalar/binary.ts","../../src/tag/scalar/timestamp.ts","../../src/tag/sequence/seq.ts","../../src/tag/sequence/omap.ts","../../src/tag/sequence/pairs.ts","../../src/common/object.ts","../../src/tag/mapping/map.ts","../../src/tag/mapping/set.ts","../../src/schema.ts","../../src/tag/mapping/real_map.ts","../../src/tag/mapping/legacy_map.ts","../../src/common/snippet.ts","../../src/common/exception.ts","../../src/parser/events.ts","../../src/parser/parser_scalar.ts","../../src/common/tagname.ts","../../src/parser/constructor.ts","../../src/parser/parser.ts","../../src/load.ts","../../src/ast/nodes.ts","../../src/ast/from_js.ts","../../src/ast/visit.ts","../../src/ast/presenter.ts","../../src/dump.ts","../../src/ast/from_events.ts"],"sourcesContent":["const NOT_RESOLVED: unique symbol = Symbol('NOT_RESOLVED')\nconst MERGE_KEY: unique symbol = Symbol('MERGE_KEY')\n\ntype ScalarRepresent = (data: any) => string\ntype SequenceRepresent = (data: any) => ArrayLike<unknown>\ntype MappingRepresent = (data: any) => Map<unknown, unknown>\n\ntype IdentifyFn = (data: any) => boolean\ntype RepresentTagNameFn = (data: any) => string\n\ninterface ScalarTagDefinition<Result = unknown> {\n  tagName: string\n  nodeKind: 'scalar'\n  implicit: boolean\n  matchByTagPrefix: boolean\n  // Set of `source.charAt(0)` keys for which `resolve` may succeed (a superset of\n  // what it really matches). A key is either a single character or '' (empty\n  // source). `null` means \"no constraint, always try\". Used by the composer to\n  // dispatch implicit scalars by first character without running every resolver.\n  implicitFirstChars: readonly string[] | null\n  // `isExplicit` is true for an explicit tag (`!!tag`), false for implicit plain\n  // scalar resolution.\n  resolve: (source: string, isExplicit: boolean, tagName: string) => Result | typeof NOT_RESOLVED\n  identify: IdentifyFn | null\n  // A scalar's printed form is text, so `represent` always yields a string. The\n  // factory supplies a `String(data)` default when a tag omits it.\n  represent: ScalarRepresent\n  representTagName: RepresentTagNameFn | null\n}\n\ninterface SequenceTagDefinition<Carrier = unknown, Result = Carrier> {\n  tagName: string\n  nodeKind: 'sequence'\n  implicit: false\n  matchByTagPrefix: boolean\n  create: (tagName: string) => Carrier\n  addItem: (carrier: Carrier, item: unknown, index: number) => void | string\n  finalize: (carrier: Carrier) => Result\n  carrierIsResult: boolean\n  identify: IdentifyFn | null\n  represent: SequenceRepresent\n  representTagName: RepresentTagNameFn | null\n}\n\ninterface MappingTagDefinition<Carrier = unknown, Result = Carrier> {\n  tagName: string\n  nodeKind: 'mapping'\n  implicit: false\n  matchByTagPrefix: boolean\n  create: (tagName: string) => Carrier\n  // Writes a pair. Returns '' on success, a non-empty error message otherwise\n  // (key does not fit the representation, value rejected, ...). Always a string\n  // so the hot path never allocates an exception wrapper.\n  addPair: (carrier: Carrier, key: unknown, value: unknown) => string\n  // Read side, mirrors `Map` — defining a representation means defining how to\n  // read it back. `has` is the hot dedup probe (membership without fetching the\n  // value); `keys`/`get` are used only on the cold merge path (`<<`).\n  has: (carrier: Carrier, key: unknown) => boolean\n  keys: (result: Result) => Iterable<unknown>\n  get: (result: Result, key: unknown) => unknown\n  finalize: (carrier: Carrier) => Result\n  carrierIsResult: boolean\n  identify: IdentifyFn | null\n  represent: MappingRepresent\n  representTagName: RepresentTagNameFn | null\n}\n\ntype TagDefinition =\n  | ScalarTagDefinition<any>\n  | SequenceTagDefinition<any, any>\n  | MappingTagDefinition<any, any>\n\ninterface ScalarTagOptions<Result> {\n  implicit?: boolean\n  matchByTagPrefix?: boolean\n  implicitFirstChars?: readonly string[] | null\n  resolve: ScalarTagDefinition<Result>['resolve']\n  identify?: ScalarTagDefinition<Result>['identify']\n  represent?: ScalarTagDefinition<Result>['represent']\n  representTagName?: ScalarTagDefinition<Result>['representTagName']\n}\n\ntype RepresentOptions<Container, Canonical, Represent> =\n  | {\n      identify?: null\n      represent?: Represent\n      representTagName?: RepresentTagNameFn | null\n    }\n  | (Container extends Canonical\n      ? {\n          identify?: IdentifyFn | null\n          represent?: Represent\n          representTagName?: RepresentTagNameFn | null\n        }\n      : {\n          identify: IdentifyFn\n          represent: Represent\n          representTagName?: RepresentTagNameFn | null\n        })\n\ntype SequenceTagOptions<Carrier, Result = Carrier> = {\n  matchByTagPrefix?: boolean\n  create: SequenceTagDefinition<Carrier, Result>['create']\n  addItem: SequenceTagDefinition<Carrier, Result>['addItem']\n  finalize?: SequenceTagDefinition<Carrier, Result>['finalize']\n} & RepresentOptions<Result, ArrayLike<unknown>, SequenceRepresent>\n\ntype MappingTagOptions<Carrier, Result = Carrier> = {\n  matchByTagPrefix?: boolean\n  create: MappingTagDefinition<Carrier, Result>['create']\n  addPair: MappingTagDefinition<Carrier, Result>['addPair']\n  has: MappingTagDefinition<Carrier, Result>['has']\n  keys: MappingTagDefinition<Carrier, Result>['keys']\n  get: MappingTagDefinition<Carrier, Result>['get']\n  finalize?: MappingTagDefinition<Carrier, Result>['finalize']\n} & RepresentOptions<Result, Map<unknown, unknown>, MappingRepresent>\n\nfunction defineScalarTag<Result> (tagName: string, options: ScalarTagOptions<Result>): ScalarTagDefinition<Result> {\n  return {\n    tagName,\n    nodeKind: 'scalar',\n    implicit: options.implicit ?? false,\n    matchByTagPrefix: options.matchByTagPrefix ?? false,\n    implicitFirstChars: options.implicitFirstChars ?? null,\n    resolve: options.resolve,\n    identify: options.identify ?? null,\n    represent: options.represent ?? (data => String(data)),\n    representTagName: options.representTagName ?? null\n  }\n}\n\nfunction defineSequenceTag<Carrier, Result = Carrier> (tagName: string, options: SequenceTagOptions<Carrier, Result>): SequenceTagDefinition<Carrier, Result> {\n  const carrierIsResult = options.finalize === undefined\n\n  return {\n    tagName,\n    nodeKind: 'sequence',\n    implicit: false,\n    matchByTagPrefix: options.matchByTagPrefix ?? false,\n    create: options.create,\n    addItem: options.addItem,\n    finalize: options.finalize ?? (carrier => carrier as unknown as Result),\n    carrierIsResult,\n    identify: options.identify ?? null,\n    represent: options.represent ?? (data => data as ArrayLike<unknown>),\n    representTagName: options.representTagName ?? null\n  }\n}\n\nfunction defineMappingTag<Carrier, Result = Carrier> (tagName: string, options: MappingTagOptions<Carrier, Result>): MappingTagDefinition<Carrier, Result> {\n  const carrierIsResult = options.finalize === undefined\n\n  return {\n    tagName,\n    nodeKind: 'mapping',\n    implicit: false,\n    matchByTagPrefix: options.matchByTagPrefix ?? false,\n    create: options.create,\n    addPair: options.addPair,\n    has: options.has,\n    keys: options.keys,\n    get: options.get,\n    finalize: options.finalize ?? (carrier => carrier as unknown as Result),\n    carrierIsResult,\n    identify: options.identify ?? null,\n    represent: options.represent ?? (data => data as Map<unknown, unknown>),\n    representTagName: options.representTagName ?? null\n  }\n}\n\nexport {\n  NOT_RESOLVED,\n  MERGE_KEY,\n  defineScalarTag,\n  defineSequenceTag,\n  defineMappingTag,\n\n  type ScalarTagDefinition,\n  type SequenceTagDefinition,\n  type MappingTagDefinition,\n  type TagDefinition,\n  type ScalarTagOptions,\n  type SequenceTagOptions,\n  type MappingTagOptions,\n  type ScalarRepresent,\n  type SequenceRepresent,\n  type MappingRepresent\n}\n","import { defineScalarTag } from '../../tag.ts'\n\nconst strTag = defineScalarTag('tag:yaml.org,2002:str', {\n  resolve: (source) => source,\n  identify: (data) => typeof data === 'string'\n})\n\nexport { strTag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\nconst NULL_VALUES = ['', '~', 'null', 'Null', 'NULL']\n\nconst nullCoreTag = defineScalarTag('tag:yaml.org,2002:null', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs: '' (empty), '~', 'null'/'Null'/'NULL'.\n  implicitFirstChars: ['', '~', 'n', 'N'],\n  resolve: (source) => {\n    if (NULL_VALUES.indexOf(source) !== -1) return null\n\n    return NOT_RESOLVED\n  },\n  identify: (object) => object === null,\n  represent: () => 'null'\n})\n\nexport { nullCoreTag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\nconst nullJsonTag = defineScalarTag('tag:yaml.org,2002:null', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs: null.\n  implicitFirstChars: ['n'],\n  resolve: (source, isExplicit) => {\n    if (source === 'null' || (isExplicit && source === '')) return null\n\n    return NOT_RESOLVED\n  },\n  identify: (object) => object === null,\n  represent: () => 'null'\n})\n\nexport { nullJsonTag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\nconst NULL_VALUES = ['', '~', 'null', 'Null', 'NULL']\n\nconst nullYaml11Tag = defineScalarTag('tag:yaml.org,2002:null', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs: '' (empty), '~', 'null'/'Null'/'NULL'.\n  implicitFirstChars: ['', '~', 'n', 'N'],\n  resolve: (source) => {\n    if (NULL_VALUES.indexOf(source) !== -1) return null\n\n    return NOT_RESOLVED\n  },\n  identify: (object) => object === null,\n  represent: () => 'null'\n})\n\nexport { nullYaml11Tag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\nconst TRUE_VALUES = ['true', 'True', 'TRUE']\nconst FALSE_VALUES = ['false', 'False', 'FALSE']\n\nconst boolCoreTag = defineScalarTag('tag:yaml.org,2002:bool', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs: true/True/TRUE, false/False/FALSE.\n  implicitFirstChars: ['t', 'T', 'f', 'F'],\n  resolve: (source) => {\n    if (TRUE_VALUES.indexOf(source) !== -1) return true\n    if (FALSE_VALUES.indexOf(source) !== -1) return false\n\n    return NOT_RESOLVED\n  },\n  identify: (object) => Object.prototype.toString.call(object) === '[object Boolean]',\n  represent: (object) => object ? 'true' : 'false'\n})\n\nexport { boolCoreTag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\nconst TRUE_VALUES = ['true']\nconst FALSE_VALUES = ['false']\n\nconst boolJsonTag = defineScalarTag('tag:yaml.org,2002:bool', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs: true, false.\n  implicitFirstChars: ['t', 'f'],\n  resolve: (source) => {\n    if (TRUE_VALUES.indexOf(source) !== -1) return true\n    if (FALSE_VALUES.indexOf(source) !== -1) return false\n\n    return NOT_RESOLVED\n  },\n  identify: (object) => Object.prototype.toString.call(object) === '[object Boolean]',\n  represent: (object) => object ? 'true' : 'false'\n})\n\nexport { boolJsonTag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\nconst TRUE_VALUES = ['true', 'True', 'TRUE', 'y', 'Y', 'yes', 'Yes', 'YES', 'on', 'On', 'ON']\nconst FALSE_VALUES = ['false', 'False', 'FALSE', 'n', 'N', 'no', 'No', 'NO', 'off', 'Off', 'OFF']\n\nconst boolYaml11Tag = defineScalarTag('tag:yaml.org,2002:bool', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs.\n  implicitFirstChars: ['y', 'Y', 'n', 'N', 't', 'T', 'f', 'F', 'o', 'O'],\n  resolve: (source) => {\n    if (TRUE_VALUES.indexOf(source) !== -1) return true\n    if (FALSE_VALUES.indexOf(source) !== -1) return false\n\n    return NOT_RESOLVED\n  },\n  identify: (object) => Object.prototype.toString.call(object) === '[object Boolean]',\n  represent: (object) => object ? 'true' : 'false'\n})\n\nexport { boolYaml11Tag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\n// YAML 1.2 Core schema implicit resolution:\n// [-+]? [0-9]+ | 0o [0-7]+ | 0x [0-9a-fA-F]+\nconst YAML_INTEGER_IMPLICIT_PATTERN = new RegExp(\n  // 0o123\n  '^(?:0o[0-7]+' +\n  // 0x1A\n  '|0x[0-9a-fA-F]+' +\n  // 12345\n  '|[-+]?[0-9]+)$')\n\n// Explicit `!!int` validation is separate from Core implicit resolution.\nconst YAML_INTEGER_EXPLICIT_PATTERN = new RegExp(\n  // 0b1010\n  '^(?:[-+]?0b[0-1]+' +\n  // 0o123\n  '|[-+]?0o[0-7]+' +\n  // 0x1A\n  '|[-+]?0x[0-9a-fA-F]+' +\n  // 12345\n  '|[-+]?[0-9]+)$')\n\nfunction parseYamlInteger (source: string) {\n  let value = source\n  let sign = 1\n\n  if (value[0] === '-' || value[0] === '+') {\n    if (value[0] === '-') sign = -1\n    value = value.slice(1)\n  }\n\n  if (value.startsWith('0b')) return sign * parseInt(value.slice(2), 2)\n  if (value.startsWith('0o')) return sign * parseInt(value.slice(2), 8)\n  if (value.startsWith('0x')) return sign * parseInt(value.slice(2), 16)\n\n  return sign * parseInt(value, 10)\n}\n\nfunction resolveYamlInteger (source: string, isExplicit: boolean) {\n  if (isExplicit) {\n    if (!YAML_INTEGER_EXPLICIT_PATTERN.test(source)) return NOT_RESOLVED\n  } else if (!YAML_INTEGER_IMPLICIT_PATTERN.test(source)) {\n    return NOT_RESOLVED\n  }\n\n  const result = parseYamlInteger(source)\n  return Number.isFinite(result) ? result : NOT_RESOLVED\n}\n\nconst intCoreTag = defineScalarTag('tag:yaml.org,2002:int', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs: optional sign + decimal digit.\n  implicitFirstChars: ['-', '+', ...'0123456789'],\n  resolve: resolveYamlInteger,\n  identify: (object) =>\n    // No ancient boxed numbers support\n    Number.isInteger(object) &&\n    // Negative zero => !!float\n    !Object.is(object, -0) &&\n    // Exponential form => !!float, round-trip for !!int 1e21 will be broken\n    object.toString(10).indexOf('e') < 0,\n  represent: (object: number) => object.toString(10)\n})\n\nexport { intCoreTag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\n// YAML 1.2 JSON schema implicit resolution:\n// -? ( 0 | [1-9] [0-9]* )\nconst YAML_INTEGER_IMPLICIT_PATTERN = new RegExp(\n  '^-?(?:0|[1-9][0-9]*)$')\n\n// Explicit `!!int` validation is separate from JSON implicit resolution.\nconst YAML_INTEGER_EXPLICIT_PATTERN = new RegExp(\n  // 0b1010\n  '^(?:[-+]?0b[0-1]+' +\n  // 0o123\n  '|[-+]?0o[0-7]+' +\n  // 0x1A\n  '|[-+]?0x[0-9a-fA-F]+' +\n  // 12345\n  '|[-+]?[0-9]+)$')\n\nfunction parseYamlInteger (source: string) {\n  let value = source\n  let sign = 1\n\n  if (value[0] === '-' || value[0] === '+') {\n    if (value[0] === '-') sign = -1\n    value = value.slice(1)\n  }\n\n  if (value.startsWith('0b')) return sign * parseInt(value.slice(2), 2)\n  if (value.startsWith('0o')) return sign * parseInt(value.slice(2), 8)\n  if (value.startsWith('0x')) return sign * parseInt(value.slice(2), 16)\n\n  return sign * parseInt(value, 10)\n}\n\nfunction resolveYamlInteger (source: string, isExplicit: boolean) {\n  if (isExplicit) {\n    if (!YAML_INTEGER_EXPLICIT_PATTERN.test(source)) return NOT_RESOLVED\n  } else if (!YAML_INTEGER_IMPLICIT_PATTERN.test(source)) {\n    return NOT_RESOLVED\n  }\n\n  const result = parseYamlInteger(source)\n  return Number.isFinite(result) ? result : NOT_RESOLVED\n}\n\nconst intJsonTag = defineScalarTag('tag:yaml.org,2002:int', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs: optional '-' or digit.\n  implicitFirstChars: ['-', ...'0123456789'],\n  resolve: resolveYamlInteger,\n  identify: (object) =>\n    // No ancient boxed numbers support\n    Number.isInteger(object) &&\n    // Negative zero => !!float\n    !Object.is(object, -0) &&\n    // Exponential form => !!float, round-trip for !!int 1e21 will be broken\n    object.toString(10).indexOf('e') < 0,\n  represent: (object: number) => object.toString(10)\n})\n\nexport { intJsonTag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\nconst YAML_INTEGER_PATTERN = new RegExp(\n  // 0b1010\n  '^(?:[-+]?0b[0-1_]+' +\n  // 0123\n  '|[-+]?0[0-7_]+' +\n  // 0x1A\n  '|[-+]?0x[0-9a-fA-F_]+' +\n  // 1:23\n  '|[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+' +\n  // 12345\n  '|[-+]?(?:0|[1-9][0-9_]*))$')\n\nfunction parseYamlInteger (source: string) {\n  let value = source.replace(/_/g, '')\n  let sign = 1\n\n  if (value[0] === '-' || value[0] === '+') {\n    if (value[0] === '-') sign = -1\n    value = value.slice(1)\n  }\n\n  if (value.startsWith('0b')) return sign * parseInt(value.slice(2), 2)\n  if (value.startsWith('0x')) return sign * parseInt(value.slice(2), 16)\n\n  if (value.includes(':')) {\n    let result = 0\n    for (const part of value.split(':')) result = result * 60 + Number(part)\n    return sign * result\n  }\n\n  if (value !== '0' && value[0] === '0') return sign * parseInt(value, 8)\n\n  return sign * parseInt(value, 10)\n}\n\nfunction resolveYamlInteger (source: string) {\n  if (!YAML_INTEGER_PATTERN.test(source)) return NOT_RESOLVED\n\n  const result = parseYamlInteger(source)\n  return Number.isFinite(result) ? result : NOT_RESOLVED\n}\n\nconst intYaml11Tag = defineScalarTag('tag:yaml.org,2002:int', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs: optional sign + decimal digit.\n  implicitFirstChars: ['-', '+', ...'0123456789'],\n  resolve: resolveYamlInteger,\n  identify: (object) =>\n    // No ancient boxed numbers support\n    Number.isInteger(object) &&\n    // Negative zero => !!float\n    !Object.is(object, -0) &&\n    // Exponential form => !!float, round-trip for !!int 1e21 will be broken\n    object.toString(10).indexOf('e') < 0,\n  represent: (object: number) => object.toString(10)\n})\n\nexport { intYaml11Tag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\nconst YAML_FLOAT_PATTERN = new RegExp(\n  // 2.5e4, 2.5 and integers\n  '^(?:[-+]?[0-9]+(?:\\\\.[0-9]*)?(?:[eE][-+]?[0-9]+)?' +\n  // .2e4, .2\n  '|[-+]?\\\\.[0-9]+(?:[eE][-+]?[0-9]+)?' +\n  // .inf\n  '|[-+]?\\\\.(?:inf|Inf|INF)' +\n  // .nan\n  '|\\\\.(?:nan|NaN|NAN))$')\n\nconst YAML_FLOAT_SPECIAL_PATTERN = new RegExp(\n  '^(?:' +\n  // .inf\n  '[-+]?\\\\.(?:inf|Inf|INF)' +\n  // .nan\n  '|\\\\.(?:nan|NaN|NAN))$')\n\nfunction resolveYamlFloat (source: string) {\n  if (!YAML_FLOAT_PATTERN.test(source)) return NOT_RESOLVED\n\n  let value = source.toLowerCase()\n  const sign = value[0] === '-' ? -1 : 1\n\n  if ('+-'.includes(value[0])) value = value.slice(1)\n\n  if (value === '.inf') return sign === 1 ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY\n  if (value === '.nan') return NaN\n\n  const result = sign * parseFloat(value)\n\n  if (Number.isFinite(result) || YAML_FLOAT_SPECIAL_PATTERN.test(source)) return result\n  return NOT_RESOLVED\n}\n\nfunction representYamlFloat (object: number) {\n  if (isNaN(object)) return '.nan'\n  if (object === Number.POSITIVE_INFINITY) return '.inf'\n  if (object === Number.NEGATIVE_INFINITY) return '-.inf'\n  if (Object.is(object, -0)) return '-0.0'\n\n  const result = object.toString(10)\n  return /^[-+]?[0-9]+e/.test(result) ? result.replace('e', '.e') : result\n}\n\nconst floatCoreTag = defineScalarTag('tag:yaml.org,2002:float', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs: optional sign, '.', or digit\n  // ('.inf'/'.nan' start with '.').\n  implicitFirstChars: ['-', '+', '.', ...'0123456789'],\n  resolve: resolveYamlFloat,\n  identify: (object) =>\n    // No ancient boxed numbers support\n    typeof object === 'number' &&\n    (\n      // We land here all numbers, not handled (declined) by !!int `.identify`\n      // The same condition as for !!int, but reversed.\n\n      // Filter out integers...\n      !Number.isInteger(object) ||\n      // but allow negative zero\n      Object.is(object, -0) ||\n      // and integers with exponential form\n      object.toString(10).indexOf('e') >= 0\n    ),\n  represent: representYamlFloat\n})\n\nexport { floatCoreTag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\n// YAML 1.2 JSON schema implicit resolution:\n// -? ( 0 | [1-9] [0-9]* ) ( \\. [0-9]* )? ( [eE] [-+]? [0-9]+ )?\nconst YAML_FLOAT_IMPLICIT_PATTERN = new RegExp(\n  // 2.5e4, 2.5 and integers\n  '^-?(?:0|[1-9][0-9]*)(?:\\\\.[0-9]*)?(?:[eE][-+]?[0-9]+)?$')\n\n// Explicit `!!float` validation is separate from JSON implicit resolution.\nconst YAML_FLOAT_EXPLICIT_PATTERN = new RegExp(\n  // 2.5e4, 2.5 and integers\n  '^(?:[-+]?[0-9]+(?:\\\\.[0-9]*)?(?:[eE][-+]?[0-9]+)?' +\n  // .2e4, .2\n  '|[-+]?\\\\.[0-9]+(?:[eE][-+]?[0-9]+)?' +\n  // .inf\n  '|[-+]?\\\\.(?:inf|Inf|INF)' +\n  // .nan\n  '|\\\\.(?:nan|NaN|NAN))$')\n\nfunction resolveYamlFloat (source: string, isExplicit: boolean) {\n  if (isExplicit) {\n    if (!YAML_FLOAT_EXPLICIT_PATTERN.test(source)) return NOT_RESOLVED\n\n    let value = source.toLowerCase()\n    const sign = value[0] === '-' ? -1 : 1\n\n    if ('+-'.includes(value[0])) value = value.slice(1)\n\n    if (value === '.inf') return sign === 1 ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY\n    if (value === '.nan') return NaN\n\n    const result = sign * parseFloat(value)\n    return Number.isFinite(result) ? result : NOT_RESOLVED\n  }\n\n  if (!YAML_FLOAT_IMPLICIT_PATTERN.test(source)) return NOT_RESOLVED\n\n  const result = Number(source)\n\n  if (Number.isFinite(result)) return result\n  return NOT_RESOLVED\n}\n\nfunction representYamlFloat (object: number) {\n  if (isNaN(object)) return '.nan'\n  if (object === Number.POSITIVE_INFINITY) return '.inf'\n  if (object === Number.NEGATIVE_INFINITY) return '-.inf'\n  if (Object.is(object, -0)) return '-0.0'\n\n  const result = object.toString(10)\n  return /^[-+]?[0-9]+e/.test(result) ? result.replace('e', '.e') : result\n}\n\nconst floatJsonTag = defineScalarTag('tag:yaml.org,2002:float', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs: optional '-' or digit.\n  implicitFirstChars: ['-', ...'0123456789'],\n  resolve: resolveYamlFloat,\n  identify: (object) =>\n    // No ancient boxed numbers support\n    typeof object === 'number' &&\n    (\n      // We land here all numbers, not handled (declined) by !!int `.identify`\n      // The same condition as for !!int, but reversed.\n\n      // Filter out integers...\n      !Number.isInteger(object) ||\n      // but allow negative zero\n      Object.is(object, -0) ||\n      // and integers with exponential form\n      object.toString(10).indexOf('e') >= 0\n    ),\n  represent: representYamlFloat\n})\n\nexport { floatJsonTag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\nconst YAML_FLOAT_PATTERN = new RegExp(\n  // 2.5e4, 2.5 and integers\n  '^(?:[-+]?(?:(?:[0-9][0-9_]*)?\\\\.[0-9_]*)(?:[eE][-+][0-9]+)?' +\n  // 190:20:30.15\n  '|[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\\\\.[0-9_]*' +\n  // .inf\n  '|[-+]?\\\\.(?:inf|Inf|INF)' +\n  // .nan\n  '|\\\\.(?:nan|NaN|NAN))$')\n\nconst YAML_FLOAT_SPECIAL_PATTERN = new RegExp(\n  '^(?:' +\n  // .inf\n  '[-+]?\\\\.(?:inf|Inf|INF)' +\n  // .nan\n  '|\\\\.(?:nan|NaN|NAN))$')\n\nfunction resolveYamlFloat (source: string) {\n  if (!YAML_FLOAT_PATTERN.test(source)) return NOT_RESOLVED\n\n  let value = source.toLowerCase().replace(/_/g, '')\n  const sign = value[0] === '-' ? -1 : 1\n\n  if ('+-'.includes(value[0])) value = value.slice(1)\n\n  if (value === '.inf') return sign === 1 ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY\n  if (value === '.nan') return NaN\n\n  let result = 0\n\n  if (value.includes(':')) {\n    for (const part of value.split(':')) result = result * 60 + Number(part)\n    result *= sign\n  } else {\n    result = sign * parseFloat(value)\n  }\n\n  if (Number.isFinite(result) || YAML_FLOAT_SPECIAL_PATTERN.test(source)) return result\n  return NOT_RESOLVED\n}\n\nfunction representYamlFloat (object: number) {\n  if (isNaN(object)) return '.nan'\n  if (object === Number.POSITIVE_INFINITY) return '.inf'\n  if (object === Number.NEGATIVE_INFINITY) return '-.inf'\n  if (Object.is(object, -0)) return '-0.0'\n\n  const result = object.toString(10)\n  return /^[-+]?[0-9]+e/.test(result) ? result.replace('e', '.e') : result\n}\n\nconst floatYaml11Tag = defineScalarTag('tag:yaml.org,2002:float', {\n  implicit: true,\n  // Superset of source.charAt(0) over all matched inputs: optional sign, '.', or digit\n  // ('.inf'/'.nan' start with '.').\n  implicitFirstChars: ['-', '+', '.', ...'0123456789'],\n  resolve: resolveYamlFloat,\n  identify: (object) =>\n    // No ancient boxed numbers support\n    typeof object === 'number' &&\n    (\n      // We land here all numbers, not handled (declined) by !!int `.identify`\n      // The same condition as for !!int, but reversed.\n\n      // Filter out integers...\n      !Number.isInteger(object) ||\n      // but allow negative zero\n      Object.is(object, -0) ||\n      // and integers with exponential form\n      object.toString(10).indexOf('e') >= 0\n    ),\n  represent: representYamlFloat\n})\n\nexport { floatYaml11Tag }\n","import { defineScalarTag, MERGE_KEY, NOT_RESOLVED } from '../../tag.ts'\n\nconst mergeTag = defineScalarTag('tag:yaml.org,2002:merge', {\n  implicit: true,\n  // source.charAt(0) over matched implicit inputs: '<' ('<<').\n  implicitFirstChars: ['<'],\n  resolve: (source, isExplicit) => {\n    if (source === '<<' || (isExplicit && source === '')) return MERGE_KEY\n    return NOT_RESOLVED\n  }\n})\n\nexport { mergeTag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\nconst BASE64_PATTERN = /^[A-Za-z0-9+/]*={0,2}$/\n\nfunction resolveYamlBinary (source: string) {\n  // Strip allowed whitespace first, so validation stays a plain base64 check.\n  const input = source.replace(/\\s/g, '')\n  if (input.length % 4 !== 0 || !BASE64_PATTERN.test(input)) return NOT_RESOLVED\n\n  const binary = atob(input)\n  const result = new Uint8Array(binary.length)\n  for (let index = 0; index < binary.length; index++) {\n    result[index] = binary.charCodeAt(index)\n  }\n  return result\n}\n\nfunction representYamlBinary (object: Uint8Array) {\n  let binary = ''\n  for (let index = 0; index < object.length; index++) {\n    binary += String.fromCharCode(object[index])\n  }\n  return btoa(binary)\n}\n\nconst binaryTag = defineScalarTag('tag:yaml.org,2002:binary', {\n  resolve: resolveYamlBinary,\n  identify: (object) => Object.prototype.toString.call(object) === '[object Uint8Array]',\n  represent: representYamlBinary\n})\n\nexport { binaryTag }\n","import { defineScalarTag, NOT_RESOLVED } from '../../tag.ts'\n\nconst YAML_DATE_REGEXP = new RegExp(\n  '^([0-9][0-9][0-9][0-9])-([0-9][0-9])-([0-9][0-9])$')\n\nconst YAML_TIMESTAMP_REGEXP = new RegExp(\n  '^([0-9][0-9][0-9][0-9])' +\n  '-([0-9][0-9]?)' +\n  '-([0-9][0-9]?)' +\n  '(?:[Tt]|[ \\\\t]+)' +\n  '([0-9][0-9]?)' +\n  ':([0-9][0-9])' +\n  ':([0-9][0-9])' +\n  '(?:\\\\.([0-9]*))?' +\n  '(?:[ \\\\t]*(Z|([-+])([0-9][0-9]?)' +\n  '(?::([0-9][0-9]))?))?$')\n\nfunction resolveYamlTimestamp (source: string) {\n  let match = YAML_DATE_REGEXP.exec(source)\n  if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(source)\n  if (match === null) return NOT_RESOLVED\n\n  const year = +(match[1])\n  const month = +(match[2]) - 1\n  const day = +(match[3])\n\n  // Date-only form (`YYYY-MM-DD`) has no time captures.\n  if (!match[4]) {\n    const date = new Date(Date.UTC(year, month, day))\n    // Reject dates that JS would normalize, e.g. 2023-02-29 -> 2023-03-01.\n    if (date.getUTCFullYear() !== year || date.getUTCMonth() !== month || date.getUTCDate() !== day) {\n      return NOT_RESOLVED\n    }\n    return date\n  }\n\n  const hour = +(match[4])\n  const minute = +(match[5])\n  const second = +(match[6])\n  let fraction = 0\n\n  // Reject times that JS would normalize into the next minute/hour/day.\n  if (hour > 23 || minute > 59 || second > 59) return NOT_RESOLVED\n\n  if (match[7]) {\n    let value = match[7].slice(0, 3)\n    while (value.length < 3) value += '0'\n    fraction = +value\n  }\n\n  const date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction))\n\n  // Reject invalid calendar dates before applying timezone offset.\n  if (date.getUTCFullYear() !== year || date.getUTCMonth() !== month || date.getUTCDate() !== day) {\n    return NOT_RESOLVED\n  }\n\n  if (match[9]) {\n    const offsetHour = +(match[10])\n    const offsetMinute = +(match[11] || 0)\n    // Reject timezone offsets that JS date arithmetic would otherwise accept.\n    if (offsetHour > 23 || offsetMinute > 59) return NOT_RESOLVED\n\n    const offset = (offsetHour * 60 + offsetMinute) * 60000\n    date.setTime(date.getTime() - (match[9] === '-' ? -offset : offset))\n  }\n\n  return date\n}\n\nconst timestampTag = defineScalarTag('tag:yaml.org,2002:timestamp', {\n  implicit: true,\n  // Both patterns start with a 4-digit year, so source.charAt(0) is always a digit.\n  implicitFirstChars: [...'0123456789'],\n  resolve: resolveYamlTimestamp,\n  identify: (object) => object instanceof Date,\n  represent: (object: Date) => object.toISOString()\n})\n\nexport { timestampTag }\n","import { defineSequenceTag } from '../../tag.ts'\n\nconst seqTag = defineSequenceTag('tag:yaml.org,2002:seq', {\n  create: () => [] as unknown[],\n  addItem: (container, item) => {\n    container.push(item)\n  },\n  identify: Array.isArray\n})\n\nexport { seqTag }\n","import { defineSequenceTag } from '../../tag.ts'\n\ntype OmapItem = Record<string, unknown>\n\nconst omapTag = defineSequenceTag('tag:yaml.org,2002:omap', {\n  create: () => [] as OmapItem[],\n  addItem: (container, item) => {\n    if (Object.prototype.toString.call(item) !== '[object Object]') {\n      return 'cannot resolve an ordered map item'\n    }\n\n    const object = item as OmapItem\n    const itemKeys = Object.keys(object)\n\n    if (itemKeys.length !== 1) return 'cannot resolve an ordered map item'\n    for (const existing of container) {\n      if (Object.prototype.hasOwnProperty.call(existing, itemKeys[0])) {\n        return 'cannot resolve an ordered map item'\n      }\n    }\n\n    container.push(object)\n    return ''\n  }\n})\n\nexport { omapTag }\n","import { defineSequenceTag } from '../../tag.ts'\n\ntype Pair = [unknown, unknown]\n\nconst pairsTag = defineSequenceTag('tag:yaml.org,2002:pairs', {\n  create: () => [] as Pair[],\n  addItem: (container, item) => {\n    if (item instanceof Map) {\n      if (item.size !== 1) return 'cannot resolve a pairs item'\n\n      container.push(item.entries().next().value!)\n      return ''\n    }\n\n    if (Object.prototype.toString.call(item) !== '[object Object]') {\n      return 'cannot resolve a pairs item'\n    }\n\n    const object = item as Record<string, unknown>\n    const keys = Object.keys(object)\n\n    if (keys.length !== 1) return 'cannot resolve a pairs item'\n\n    container.push([keys[0], object[keys[0]]] satisfies Pair)\n    return ''\n  }\n})\n\nexport { pairsTag }\n","function isPlainObject (data: unknown): boolean {\n  if (data === null || typeof data !== 'object' || Array.isArray(data)) return false\n  const prototype = Object.getPrototypeOf(data)\n  return prototype === null || prototype === Object.prototype\n}\n\n// Project `object` onto `keys`. Absent keys are skipped (so the result can be\n// safely spread over defaults without clobbering them with `undefined`), hence\n// the `Partial` return.\nfunction pick<T extends object, K extends keyof T> (object: T, keys: readonly K[]): Partial<Pick<T, K>> {\n  const result: Partial<Pick<T, K>> = {}\n  for (const key of keys) {\n    if (object[key] !== undefined) result[key] = object[key]\n  }\n  return result\n}\n\nexport {\n  isPlainObject,\n  pick\n}\n","import { defineMappingTag } from '../../tag.ts'\nimport { isPlainObject } from '../../common/object.ts'\n\ntype StringMapping = Record<string, unknown>\n\nconst mapTag = defineMappingTag('tag:yaml.org,2002:map', {\n  create: (): StringMapping => ({}),\n  identify: isPlainObject,\n  // Dump side: wrap the plain object into the canonical `Map` form the writer\n  // walks. Shallow — keys/values stay references to the originals.\n  represent: (o: StringMapping) => {\n    const map = new Map<string, unknown>()\n    for (const key of Object.keys(o)) map.set(key, o[key])\n    return map\n  },\n  addPair: (container, key, value) => {\n    if (key !== null && typeof key === 'object') {\n      return 'object-based map does not support complex keys'\n    }\n    const normalizedKey = String(key)\n    if (normalizedKey === '__proto__') {\n      // Define as an own data property so a literal `__proto__` key stays data\n      // and never invokes the prototype setter.\n      Object.defineProperty(container, normalizedKey, {\n        value, enumerable: true, configurable: true, writable: true\n      })\n    } else {\n      container[normalizedKey] = value\n    }\n    return ''\n  },\n  // hasOwn, not `in`: a plain object inherits `toString` and friends.\n  has: (container, key) => {\n    if (key !== null && typeof key === 'object') return false\n    return Object.prototype.hasOwnProperty.call(container, String(key))\n  },\n  keys: (container) => Object.keys(container),\n  get: (container, key) => container[String(key)]\n})\n\nexport { mapTag, isPlainObject, type StringMapping }\n","import { defineMappingTag } from '../../tag.ts'\n\nconst setTag = defineMappingTag('tag:yaml.org,2002:set', {\n  create: () => new Set<unknown>(),\n  identify: (data) => data instanceof Set,\n  represent: (data: Set<unknown>) => {\n    const map = new Map<unknown, null>()\n    for (const key of data) map.set(key, null)\n    return map\n  },\n  addPair: (container, key, value) => {\n    if (value !== null) return 'cannot resolve a set item'\n    container.add(key)\n    return ''\n  },\n  has: (container, key) => container.has(key),\n  keys: (container) => container.keys(),\n  get: () => null\n})\n\nexport { setTag }\n","import {\n  type MappingTagDefinition,\n  type ScalarTagDefinition,\n  type SequenceTagDefinition,\n  type TagDefinition\n} from './tag.ts'\nimport { strTag } from './tag/scalar/str.ts'\nimport { nullCoreTag } from './tag/scalar/null_core.ts'\nimport { nullJsonTag } from './tag/scalar/null_json.ts'\nimport { nullYaml11Tag } from './tag/scalar/null_yaml11.ts'\nimport { boolCoreTag } from './tag/scalar/bool_core.ts'\nimport { boolJsonTag } from './tag/scalar/bool_json.ts'\nimport { boolYaml11Tag } from './tag/scalar/bool_yaml11.ts'\nimport { intCoreTag } from './tag/scalar/int_core.ts'\nimport { intJsonTag } from './tag/scalar/int_json.ts'\nimport { intYaml11Tag } from './tag/scalar/int_yaml11.ts'\nimport { floatCoreTag } from './tag/scalar/float_core.ts'\nimport { floatJsonTag } from './tag/scalar/float_json.ts'\nimport { floatYaml11Tag } from './tag/scalar/float_yaml11.ts'\nimport { mergeTag } from './tag/scalar/merge.ts'\nimport { binaryTag } from './tag/scalar/binary.ts'\nimport { timestampTag } from './tag/scalar/timestamp.ts'\nimport { seqTag } from './tag/sequence/seq.ts'\nimport { omapTag } from './tag/sequence/omap.ts'\nimport { pairsTag } from './tag/sequence/pairs.ts'\nimport { mapTag } from './tag/mapping/map.ts'\nimport { setTag } from './tag/mapping/set.ts'\n\ninterface TagDefinitionMap {\n  scalar: Record<string, ScalarTagDefinition>\n  sequence: Record<string, SequenceTagDefinition>\n  mapping: Record<string, MappingTagDefinition>\n}\n\ninterface TagDefinitionListMap {\n  scalar: ScalarTagDefinition[]\n  sequence: SequenceTagDefinition[]\n  mapping: MappingTagDefinition[]\n}\n\nfunction createTagDefinitionMap (): TagDefinitionMap {\n  return {\n    scalar: {},\n    sequence: {},\n    mapping: {}\n  }\n}\n\nfunction createTagDefinitionListMap (): TagDefinitionListMap {\n  return {\n    scalar: [],\n    sequence: [],\n    mapping: []\n  }\n}\n\nfunction compileTags (tags: readonly TagDefinition[]) {\n  const result: TagDefinition[] = []\n\n  for (const tag of tags) {\n    let index = result.length\n\n    for (let previousIndex = 0; previousIndex < result.length; previousIndex++) {\n      const previous = result[previousIndex]\n\n      if (previous.nodeKind === tag.nodeKind &&\n          previous.tagName === tag.tagName &&\n          previous.matchByTagPrefix === tag.matchByTagPrefix) {\n        index = previousIndex\n        break\n      }\n    }\n\n    result[index] = tag\n  }\n\n  return result\n}\n\nclass Schema {\n  readonly tags: readonly TagDefinition[]\n  readonly implicitScalarTags: readonly ScalarTagDefinition[]\n  // Dispatch implicit scalar resolvers by `source.charAt(0)`. Each bucket holds the\n  // resolvers that may match that key, in schema order; a key absent from the map\n  // uses `implicitScalarAnyFirstChar` (resolvers that declared no first-char\n  // constraint, so they apply to any first character).\n  readonly implicitScalarByFirstChar: ReadonlyMap<string, readonly ScalarTagDefinition[]>\n  readonly implicitScalarAnyFirstChar: readonly ScalarTagDefinition[]\n  // The default scalar tag (`!!str`), resolved once so the composer's fallback for\n  // unresolved plain scalars avoids a keyed lookup per scalar.\n  readonly defaultScalarTag: ScalarTagDefinition\n  // The default container tags (`!!seq` / `!!map`), used by the dumper: when a\n  // value is identified by its default tag, the tag is implicit and not printed.\n  // Undefined if the schema does not define them (then such values can't be dumped).\n  readonly defaultSequenceTag: SequenceTagDefinition | undefined\n  readonly defaultMappingTag: MappingTagDefinition | undefined\n  readonly exact: TagDefinitionMap\n  readonly prefix: TagDefinitionListMap\n\n  constructor (tags: readonly TagDefinition[]) {\n    const compiledTags = compileTags(tags)\n    const implicitScalarTags: ScalarTagDefinition[] = []\n    const exact = createTagDefinitionMap()\n    const prefix = createTagDefinitionListMap()\n\n    for (const tag of compiledTags) {\n      if (tag.nodeKind === 'scalar' && tag.implicit) {\n        if (tag.matchByTagPrefix) {\n          throw new Error('Implicit scalar tags cannot match by tag prefix')\n        }\n\n        implicitScalarTags.push(tag)\n      }\n\n      switch (tag.nodeKind) {\n        case 'scalar':\n          if (tag.matchByTagPrefix) prefix.scalar.push(tag)\n          else exact.scalar[tag.tagName] = tag\n          break\n        case 'sequence':\n          if (tag.matchByTagPrefix) prefix.sequence.push(tag)\n          else exact.sequence[tag.tagName] = tag\n          break\n        case 'mapping':\n          if (tag.matchByTagPrefix) prefix.mapping.push(tag)\n          else exact.mapping[tag.tagName] = tag\n          break\n      }\n    }\n\n    const implicitScalarAnyFirstChar = implicitScalarTags.filter(tag => tag.implicitFirstChars === null)\n\n    const keys = new Set<string>()\n    for (const tag of implicitScalarTags) {\n      if (tag.implicitFirstChars !== null) {\n        for (const key of tag.implicitFirstChars) keys.add(key)\n      }\n    }\n\n    const implicitScalarByFirstChar = new Map<string, ScalarTagDefinition[]>()\n    for (const key of keys) {\n      implicitScalarByFirstChar.set(key, implicitScalarTags.filter(tag =>\n        tag.implicitFirstChars === null || tag.implicitFirstChars.indexOf(key) !== -1))\n    }\n\n    const defaultScalarTag = exact.scalar['tag:yaml.org,2002:str']\n    if (!defaultScalarTag) throw new Error('schema does not define the default scalar tag (tag:yaml.org,2002:str)')\n\n    this.tags = compiledTags\n    this.implicitScalarTags = implicitScalarTags\n    this.implicitScalarByFirstChar = implicitScalarByFirstChar\n    this.implicitScalarAnyFirstChar = implicitScalarAnyFirstChar\n    this.defaultScalarTag = defaultScalarTag\n    this.defaultSequenceTag = exact.sequence['tag:yaml.org,2002:seq']\n    this.defaultMappingTag = exact.mapping['tag:yaml.org,2002:map']\n    this.exact = exact\n    this.prefix = prefix\n  }\n\n  withTags (...tags: Array<TagDefinition | readonly TagDefinition[]>): Schema {\n    let flatTags: TagDefinition[] = []\n    for (const tag of tags) flatTags = flatTags.concat(tag)\n\n    return new Schema([...this.tags, ...flatTags])\n  }\n}\n\nconst FAILSAFE_SCHEMA = new Schema([\n  strTag,\n  seqTag,\n  mapTag\n])\n\nconst JSON_SCHEMA = new Schema([\n  ...FAILSAFE_SCHEMA.tags,\n  nullJsonTag,\n  boolJsonTag,\n  intJsonTag,\n  floatJsonTag\n])\n\nconst CORE_SCHEMA = new Schema([\n  ...FAILSAFE_SCHEMA.tags,\n  nullCoreTag,\n  boolCoreTag,\n  intCoreTag,\n  floatCoreTag\n])\n\nconst YAML11_SCHEMA = new Schema([\n  ...FAILSAFE_SCHEMA.tags,\n  nullYaml11Tag,\n  boolYaml11Tag,\n  intYaml11Tag,\n  floatYaml11Tag,\n  timestampTag,\n  mergeTag,\n  binaryTag,\n  omapTag,\n  pairsTag,\n  setTag\n])\n\nexport {\n  Schema,\n  FAILSAFE_SCHEMA,\n  JSON_SCHEMA,\n  CORE_SCHEMA,\n  YAML11_SCHEMA,\n\n  type TagDefinitionMap,\n  type TagDefinitionListMap\n}\n","import { defineMappingTag } from '../../tag.ts'\nimport { isPlainObject } from '../../common/object.ts'\n\ntype RealMapping = Map<unknown, unknown>\n\n// A mapping represented as a real `Map`: keys keep their constructed type,\n// nothing is stringified. Drop-in replacement for the default `!!map` tag\n// (same tag name) — `CORE_SCHEMA.withTags(realMapTag)`.\nconst realMapTag = defineMappingTag('tag:yaml.org,2002:map', {\n  create: () => new Map<unknown, unknown>(),\n  addPair: (container: RealMapping, key, value) => {\n    container.set(key, value)\n    return ''\n  },\n  has: (container: RealMapping, key) => container.has(key),\n  keys: (container: RealMapping) => container.keys(),\n  get: (container: RealMapping, key) => container.get(key),\n  // Dump side: handle both a real `Map` and a plain object, so this tag fully\n  // replaces the default map representation when dumping too.\n  identify: (data) => data instanceof Map || isPlainObject(data),\n  // Dump side: the canonical mapping form is a `Map`. A real `Map` passes\n  // through untouched (keys keep their type); a plain object is wrapped\n  // shallowly. Lossless — nothing is stringified.\n  represent: (data) => {\n    if (data instanceof Map) return data\n    const map = new Map<unknown, unknown>()\n    const obj = data as Record<string, unknown>\n    for (const key of Object.keys(obj)) map.set(key, obj[key])\n    return map\n  }\n})\n\nexport { realMapTag }\n","import { defineMappingTag } from '../../tag.ts'\nimport { isPlainObject } from '../../common/object.ts'\n\ntype StringMapping = Record<string, unknown>\n\n// Coerce a constructed key into the string identity a `{}` representation uses.\n// Returns null for a nested array key (an array element that is itself an\n// array), which would otherwise blow up exponentially when stringified via\n// aliases.\nfunction normalizeKey (key: unknown): string | null {\n  if (Array.isArray(key)) {\n    const array = Array.prototype.slice.call(key) as unknown[]\n\n    for (let index = 0; index < array.length; index++) {\n      if (Array.isArray(array[index])) return null\n\n      if (typeof array[index] === 'object' &&\n          Object.prototype.toString.call(array[index]) === '[object Object]') {\n        array[index] = '[object Object]'\n      }\n    }\n\n    return String(array)\n  }\n\n  if (typeof key === 'object' &&\n      Object.prototype.toString.call(key) === '[object Object]') {\n    return '[object Object]'\n  }\n\n  return String(key)\n}\n\nconst legacyMapTag = defineMappingTag('tag:yaml.org,2002:map', {\n  create: (): StringMapping => ({}),\n  identify: isPlainObject,\n  // Dump side: wrap the plain object into the canonical `Map` form the writer\n  // walks. Shallow — keys/values stay references to the originals.\n  represent: (o: StringMapping) => {\n    const map = new Map<string, unknown>()\n    for (const key of Object.keys(o)) map.set(key, o[key])\n    return map\n  },\n  addPair: (container, key, value) => {\n    const normalizedKey = normalizeKey(key)\n    if (normalizedKey === null) return 'nested arrays are not supported inside keys'\n    if (normalizedKey === '__proto__') {\n      // Define as an own data property so a literal `__proto__` key stays data\n      // and never invokes the prototype setter.\n      Object.defineProperty(container, normalizedKey, {\n        value, enumerable: true, configurable: true, writable: true\n      })\n    } else {\n      container[normalizedKey] = value\n    }\n    return ''\n  },\n  // hasOwn, not `in`: a plain object inherits `toString` and friends.\n  has: (container, key) => {\n    const normalizedKey = normalizeKey(key)\n    return normalizedKey !== null && Object.prototype.hasOwnProperty.call(container, normalizedKey)\n  },\n  keys: (container) => Object.keys(container),\n  get: (container, key) => container[String(key)]\n})\n\nexport { legacyMapTag, isPlainObject, type StringMapping }\n","export interface SnippetMark {\n  name?: string | null\n  buffer: string\n  position: number\n  line: number\n  column: number\n  snippet?: string | null\n}\n\ninterface SnippetOptions {\n  maxLength?: number\n  indent?: number\n  linesBefore?: number\n  linesAfter?: number\n}\n\nconst DEFAULT_SNIPPET_OPTIONS: Required<SnippetOptions> = {\n  maxLength: 79,\n  indent: 1,\n  linesBefore: 3,\n  linesAfter: 2\n}\n\n// get snippet for a single line, respecting maxLength\nfunction getLine (buffer: string, lineStart: number, lineEnd: number, position: number, maxLineLength: number) {\n  let head = ''\n  let tail = ''\n  const maxHalfLength = Math.floor(maxLineLength / 2) - 1\n\n  if (position - lineStart > maxHalfLength) {\n    head = ' ... '\n    lineStart = position - maxHalfLength + head.length\n  }\n\n  if (lineEnd - position > maxHalfLength) {\n    tail = ' ...'\n    lineEnd = position + maxHalfLength - tail.length\n  }\n\n  return {\n    str: head + buffer.slice(lineStart, lineEnd).replace(/\\t/g, '→') + tail,\n    pos: position - lineStart + head.length // relative position\n  }\n}\n\nfunction padStart (string: string, max: number) {\n  // max() protects from negativa value, to avoid exception.\n  return ' '.repeat(Math.max(max - string.length, 0)) + string\n}\n\nfunction makeSnippet (mark: SnippetMark, options?: SnippetOptions) {\n  if (!mark.buffer) return null\n\n  const opts = { ...DEFAULT_SNIPPET_OPTIONS, ...options }\n\n  const re = /\\r?\\n|\\r|\\0/g\n  const lineStarts = [0]\n  const lineEnds: number[] = []\n  let match: RegExpExecArray | null\n  let foundLineNo = -1\n\n  while ((match = re.exec(mark.buffer))) {\n    lineEnds.push(match.index)\n    lineStarts.push(match.index + match[0].length)\n\n    if (mark.position <= match.index && foundLineNo < 0) {\n      foundLineNo = lineStarts.length - 2\n    }\n  }\n\n  if (foundLineNo < 0) foundLineNo = lineStarts.length - 1\n\n  let result = ''\n  const lineNoLength = Math.min(mark.line + opts.linesAfter, lineEnds.length).toString().length\n  const maxLineLength = opts.maxLength - (opts.indent + lineNoLength + 3)\n\n  for (let i = 1; i <= opts.linesBefore; i++) {\n    if (foundLineNo - i < 0) break\n    const line = getLine(\n      mark.buffer,\n      lineStarts[foundLineNo - i],\n      lineEnds[foundLineNo - i],\n      mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo - i]),\n      maxLineLength\n    )\n    result = `${' '.repeat(opts.indent)}${padStart((mark.line - i + 1).toString(), lineNoLength)} | ${line.str}\\n${result}`\n  }\n\n  const line = getLine(mark.buffer, lineStarts[foundLineNo], lineEnds[foundLineNo], mark.position, maxLineLength)\n  result += `${' '.repeat(opts.indent)}${padStart((mark.line + 1).toString(), lineNoLength)} | ${line.str}\\n`\n  result += `${'-'.repeat(opts.indent + lineNoLength + 3 + line.pos)}^\\n`\n\n  for (let i = 1; i <= opts.linesAfter; i++) {\n    if (foundLineNo + i >= lineEnds.length) break\n    const line = getLine(\n      mark.buffer,\n      lineStarts[foundLineNo + i],\n      lineEnds[foundLineNo + i],\n      mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo + i]),\n      maxLineLength\n    )\n    result += `${' '.repeat(opts.indent)}${padStart((mark.line + i + 1).toString(), lineNoLength)} | ${line.str}\\n`\n  }\n\n  return result.replace(/\\n$/, '')\n}\n\nexport default makeSnippet\n","import makeSnippet, { type SnippetMark } from './snippet.ts'\n\n// YAML error class. http://stackoverflow.com/questions/8458984\n//\nfunction formatError (exception: YAMLException, compact?: boolean) {\n  let where = ''\n\n  if (!exception.mark) return exception.reason\n\n  if (exception.mark.name) {\n    where += `in \"${exception.mark.name}\" `\n  }\n\n  where += `(${exception.mark.line + 1}:${exception.mark.column + 1})`\n\n  if (!compact && exception.mark.snippet) {\n    where += `\\n\\n${exception.mark.snippet}`\n  }\n\n  return `${exception.reason} ${where}`\n}\n\nclass YAMLException extends Error {\n  reason: string\n  mark?: SnippetMark\n\n  constructor (reason: string, mark?: SnippetMark) {\n    super()\n\n    this.name = 'YAMLException'\n    this.reason = reason\n    this.mark = mark\n    this.message = formatError(this, false)\n\n    // Guard for ancient browsers\n    if (Error.captureStackTrace) {\n      // Include stack trace in error object,\n      Error.captureStackTrace(this, this.constructor)\n    }\n  }\n\n  toString (compact?: boolean) {\n    return `${this.name}: ${formatError(this, compact)}`\n  }\n}\n\n// Build a YAMLException with a source snippet and throw it. `source` is the\n// raw input text (no