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x/yaml/src/options.ts

JavaScript parser and stringifier for YAML
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import type { Reviver } from './doc/applyReviver.js'import type { Directives } from './doc/directives.js'import type { LogLevelId } from './log.js'import type { ParsedNode } from './nodes/Node.js'import type { Pair } from './nodes/Pair.js'import type { Scalar } from './nodes/Scalar.js'import type { LineCounter } from './parse/line-counter.js'import type { Schema } from './schema/Schema.js'import type { Tags } from './schema/tags.js'import type { CollectionTag, ScalarTag } from './schema/types.js'
export type ParseOptions = { /** * Whether integers should be parsed into BigInt rather than number values. * * Default: `false` * * https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/BigInt */ intAsBigInt?: boolean
/** * Include a `srcToken` value on each parsed `Node`, containing the CST token * that was composed into this node. * * Default: `false` */ keepSourceTokens?: boolean
/** * If set, newlines will be tracked, to allow for `lineCounter.linePos(offset)` * to provide the `{ line, col }` positions within the input. */ lineCounter?: LineCounter
/** * Include line/col position & node type directly in parse errors. * * Default: `true` */ prettyErrors?: boolean
/** * Detect and report errors that are required by the YAML 1.2 spec, * but are caused by unambiguous content. * * Default: `true` */ strict?: boolean
/** * YAML requires map keys to be unique. By default, this is checked by * comparing scalar values with `===`; deep equality is not checked for * aliases or collections. If merge keys are enabled by the schema, * multiple `<<` keys are allowed. * * Set `false` to disable, or provide your own comparator function to * customise. The comparator will be passed two `ParsedNode` values, and * is expected to return a `boolean` indicating their equality. * * Default: `true` */ uniqueKeys?: boolean | ((a: ParsedNode, b: ParsedNode) => boolean)}
export type DocumentOptions = { /** * @internal * Used internally by Composer. If set and includes an explicit version, * that overrides the `version` option. */ _directives?: Directives
/** * Control the logging level during parsing * * Default: `'warn'` */ logLevel?: LogLevelId
/** * The YAML version used by documents without a `%YAML` directive. * * Default: `"1.2"` */ version?: '1.1' | '1.2' | 'next'}
export type SchemaOptions = { /** * When parsing, warn about compatibility issues with the given schema. * When stringifying, use scalar styles that are parsed correctly * by the `compat` schema as well as the actual schema. * * Default: `null` */ compat?: string | Tags | null
/** * Array of additional tags to include in the schema, or a function that may * modify the schema's base tag array. */ customTags?: Tags | ((tags: Tags) => Tags) | null
/** * Enable support for `<<` merge keys. * * Default: `false` for YAML 1.2, `true` for earlier versions */ merge?: boolean
/** * When using the `'core'` schema, support parsing values with these * explicit YAML 1.1 tags: * * `!!binary`, `!!omap`, `!!pairs`, `!!set`, `!!timestamp`. * * Default `true` */ resolveKnownTags?: boolean
/** * The base schema to use. * * The core library has built-in support for the following: * - `'failsafe'`: A minimal schema that parses all scalars as strings * - `'core'`: The YAML 1.2 core schema * - `'json'`: The YAML 1.2 JSON schema, with minimal rules for JSON compatibility * - `'yaml-1.1'`: The YAML 1.1 schema * * If using another (custom) schema, the `customTags` array needs to * fully define the schema's tags. * * Default: `'core'` for YAML 1.2, `'yaml-1.1'` for earlier versions */ schema?: string | Schema
/** * When adding to or stringifying a map, sort the entries. * If `true`, sort by comparing key values with `<`. * Does not affect item order when parsing. * * Default: `false` */ sortMapEntries?: boolean | ((a: Pair, b: Pair) => number)
/** * Override default values for `toString()` options. */ toStringDefaults?: ToStringOptions}
export type CreateNodeOptions = { /** * During node construction, use anchors and aliases to keep strictly equal * non-null objects as equivalent in YAML. * * Default: `true` */ aliasDuplicateObjects?: boolean
/** * Default prefix for anchors. * * Default: `'a'`, resulting in anchors `a1`, `a2`, etc. */ anchorPrefix?: string
/** Force the top-level collection node to use flow style. */ flow?: boolean
/** * Keep `undefined` object values when creating mappings, rather than * discarding them. * * Default: `false` */ keepUndefined?: boolean | null
onTagObj?: (tagObj: ScalarTag | CollectionTag) => void
/** * Specify the top-level collection type, e.g. `"!!omap"`. Note that this * requires the corresponding tag to be available in this document's schema. */ tag?: string}
export type ToJSOptions = { /** * Use Map rather than Object to represent mappings. * * Default: `false` */ mapAsMap?: boolean
/** * Prevent exponential entity expansion attacks by limiting data aliasing count; * set to `-1` to disable checks; `0` disallows all alias nodes. * * Default: `100` */ maxAliasCount?: number
/** * If defined, called with the resolved `value` and reference `count` for * each anchor in the document. */ onAnchor?: (value: unknown, count: number) => void
/** * Optional function that may filter or modify the output JS value * * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse#using_the_reviver_parameter */ reviver?: Reviver}
export type ToStringOptions = { /** * Use block quote styles for scalar values where applicable. * Set to `false` to disable block quotes completely. * * Default: `true` */ blockQuote?: boolean | 'folded' | 'literal'
/** * Enforce `'block'` or `'flow'` style on maps and sequences. * Empty collections will always be stringified as `{}` or `[]`. * * Default: `'any'`, allowing each node to set its style separately * with its `flow: boolean` (default `false`) property. */ collectionStyle?: 'any' | 'block' | 'flow'
/** * Comment stringifier. * Output should be valid for the current schema. * * By default, empty comment lines are left empty, * lines consisting of a single space are replaced by `#`, * and all other lines are prefixed with a `#`. */ commentString?: (comment: string) => string
/** * The default type of string literal used to stringify implicit key values. * Output may use other types if required to fully represent the value. * * If `null`, the value of `defaultStringType` is used. * * Default: `null` */ defaultKeyType?: Scalar.Type | null
/** * The default type of string literal used to stringify values in general. * Output may use other types if required to fully represent the value. * * Default: `'PLAIN'` */ defaultStringType?: Scalar.Type
/** * Include directives in the output. * * - If `true`, at least the document-start marker `---` is always included. * This does not force the `%YAML` directive to be included. To do that, * set `doc.directives.yaml.explicit = true`. * - If `false`, no directives or marker is ever included. If using the `%TAG` * directive, you are expected to include it manually in the stream before * its use. * - If `null`, directives and marker may be included if required. * * Default: `null` */ directives?: boolean | null
/** * Restrict double-quoted strings to use JSON-compatible syntax. * * Default: `false` */ doubleQuotedAsJSON?: boolean
/** * Minimum length for double-quoted strings to use multiple lines to * represent the value. Ignored if `doubleQuotedAsJSON` is set. * * Default: `40` */ doubleQuotedMinMultiLineLength?: number
/** * String representation for `false`. * With the core schema, use `'false'`, `'False'`, or `'FALSE'`. * * Default: `'false'` */ falseStr?: string
/** * The number of spaces to use when indenting code. * * Default: `2` */ indent?: number
/** * Whether block sequences should be indented. * * Default: `true` */ indentSeq?: boolean
/** * Maximum line width (set to `0` to disable folding). * * This is a soft limit, as only double-quoted semantics allow for inserting * a line break in the middle of a word, as well as being influenced by the * `minContentWidth` option. * * Default: `80` */ lineWidth?: number
/** * Minimum line width for highly-indented content (set to `0` to disable). * * Default: `20` */ minContentWidth?: number
/** * String representation for `null`. * With the core schema, use `'null'`, `'Null'`, `'NULL'`, `'~'`, or an empty * string `''`. * * Default: `'null'` */ nullStr?: string
/** * Require keys to be scalars and to use implicit rather than explicit notation. * * Default: `false` */ simpleKeys?: boolean
/** * Use 'single quote' rather than "double quote" where applicable. * Set to `false` to disable single quotes completely. * * Default: `null` */ singleQuote?: boolean | null
/** * String representation for `true`. * With the core schema, use `'true'`, `'True'`, or `'TRUE'`. * * Default: `'true'` */ trueStr?: string
/** * The anchor used by an alias must be defined before the alias node. As it's * possible for the document to be modified manually, the order may be * verified during stringification. * * Default: `'true'` */ verifyAliasOrder?: boolean}