API

The remaining types specified in `@parcel/types`

The most important data types are listed on the page of the relevant plugin type.

AST parcel/packages/core/types/index.js:18

Plugin-specific AST, any

Type
type AST = _AST;
Referenced by:
BaseAsset, BundleResult, MutableAsset, Transformer, TransformerResult

ConfigResult parcel/packages/core/types/index.js:19

Type
type ConfigResult = _ConfigResult;
Referenced by:
MultiThreadValidator

ConfigResultWithFilePath parcel/packages/core/types/index.js:21

Plugin-specific config result, any

type ConfigResultWithFilePath<T> = {|
  contents: T,
  filePath: FilePath,
|}
Referenced by:
Config

EnvMap parcel/packages/core/types/index.js:26

process.env

Type
type EnvMap = typeof process.env;
Referenced by:
InitialParcelOptions, PluginOptions

JSONValue parcel/packages/core/types/index.js:28

Type
type JSONValue = null | void | boolean | number | string | Array<JSONValue> | JSONObject;

JSONObject parcel/packages/core/types/index.js:38

A JSON object (as in "map")

type JSONObject = {
}
Referenced by:
JSONValue, Meta, ResolveResult

PackageName parcel/packages/core/types/index.js:40

Type
type PackageName = string;
Referenced by:
Environment, EnvironmentOptions, PackageJSON, PackageTargetDescriptor, RawParcelConfig, RawParcelConfigPipeline

FilePath parcel/packages/core/types/index.js:41

Type
type FilePath = string;
Referenced by:
BaseAsset, BundleGraph, Config, ConfigResultWithFilePath, Dependency, DependencyOptions, DevDepOptions, File, FileAboveInvalidation, FileInvalidation, HTTPSOptions, InitialParcelOptions, MutableAsset, Namer, PackageJSON, PackageTargetDescriptor, PackagedBundle, PluginOptions, RawParcelConfig, ResolveConfigFn, ResolveConfigWithPathFn, ResolveFn, ResolveResult, ResolvedParcelConfigFile, Resolver, RuntimeAsset, ServerOptions, Target, TargetDescriptor, TransformingProgressEvent, ValidationEvent

Glob parcel/packages/core/types/index.js:42

Type
type Glob = string;
Referenced by:
GlobInvalidation, PackageJSON, RawParcelConfig

Semver parcel/packages/core/types/index.js:43

Type
type Semver = string;
Referenced by:
ASTGenerator, PackageJSON

SemverRange parcel/packages/core/types/index.js:44

Type
type SemverRange = string;
Referenced by:
DevDepOptions, Engines

DependencySpecifier parcel/packages/core/types/index.js:46

See Dependency

Type
type DependencySpecifier = string;
Referenced by:
Dependency, DependencyOptions, DevDepOptions, InitialParcelOptions

GlobMap parcel/packages/core/types/index.js:49

A pipeline as specified in the config mapping to T

type GlobMap<T> = {
}

RawParcelConfigPipeline parcel/packages/core/types/index.js:51

Type
type RawParcelConfigPipeline = Array<PackageName>;
Referenced by:
RawParcelConfig

HMROptions parcel/packages/core/types/index.js:53 

type HMROptions = {
  port?: number,
  host?: string,
}
Referenced by:
InitialParcelOptions, PluginOptions

RawParcelConfig parcel/packages/core/types/index.js:56

The format of .parcelrc

type RawParcelConfig = {|
  extends?: PackageName | FilePath | Array<PackageName | FilePath>,
  resolvers?: RawParcelConfigPipeline,
  transformers?: {
    [Glob]: RawParcelConfigPipeline,
    ...
  },
  bundler?: PackageName,
  namers?: RawParcelConfigPipeline,
  runtimes?: RawParcelConfigPipeline,
  packagers?: {
    [Glob]: PackageName,
    ...
  },
  optimizers?: {
    [Glob]: RawParcelConfigPipeline,
    ...
  },
  compressors?: {
    [Glob]: RawParcelConfigPipeline,
    ...
  },
  reporters?: RawParcelConfigPipeline,
  validators?: {
    [Glob]: RawParcelConfigPipeline,
    ...
  },
|}
Referenced by:
ResolvedParcelConfigFile

ResolvedParcelConfigFile parcel/packages/core/types/index.js:71

A .parcelrc where all package names are resolved

type ResolvedParcelConfigFile = {|
  ...RawParcelConfig,
  +filePath: FilePath,
  +resolveFrom?: FilePath,
|}

Engines parcel/packages/core/types/index.js:78

Corresponds to pkg#engines

type Engines = {
  +browsers?: string | Array<string>,
  +electron?: SemverRange,
  +node?: SemverRange,
  +parcel?: SemverRange,
}
Referenced by:
Environment, EnvironmentOptions, InitialParcelOptions, PackageJSON, PackageTargetDescriptor

TargetSourceMapOptions parcel/packages/core/types/index.js:87

Corresponds to pkg#targets.*.sourceMap

type TargetSourceMapOptions = {|
  +sourceRoot?: string,
  +inline?: boolean,
  +inlineSources?: boolean,
|}
Referenced by:
Environment, EnvironmentOptions, PackageTargetDescriptor

Target parcel/packages/core/types/index.js:96

A parsed version of PackageTargetDescriptor

interface Target {
  +distEntry: ?FilePath,

The output filename of the entry

  +distDir: FilePath,

The output folder

  +env: Environment,
  +name: string,
  +publicUrl: string,
  +loc: ?SourceLocation,

The location that created this Target, e.g. package.json#main

}
Referenced by:
Bundle, BundleGraph, BundleGroup, CreateBundleOpts, Dependency, MutableBundleGraph, PackageTargetDescriptor

EnvironmentContext parcel/packages/core/types/index.js:109

In which environment the output should run (influces e.g. bundle loaders)

Type
type EnvironmentContext = 'browser' | 'web-worker' | 'service-worker' | 'worklet' | 'node' | 'electron-main' | 'electron-renderer';
Referenced by:
Environment, EnvironmentOptions, PackageTargetDescriptor

OutputFormat parcel/packages/core/types/index.js:119

The JS module format for the bundle output

Type
type OutputFormat = 'esmodule' | 'commonjs' | 'global';
Referenced by:
Environment, EnvironmentOptions, InitialParcelOptions, PackageTargetDescriptor

PackageTargetDescriptor parcel/packages/core/types/index.js:126

The format of pkg#targets.*
See Environment and Target.

type PackageTargetDescriptor = {|
  +context?: EnvironmentContext,
  +engines?: Engines,
  +includeNodeModules?: boolean | Array<PackageName> | {
    [PackageName]: boolean,
    ...
  },
  +outputFormat?: OutputFormat,
  +publicUrl?: string,
  +distDir?: FilePath,
  +sourceMap?: boolean | TargetSourceMapOptions,
  +isLibrary?: boolean,
  +optimize?: boolean,
  +scopeHoist?: boolean,
  +source?: FilePath | Array<FilePath>,
|}
Referenced by:
PackageJSON, Target, TargetDescriptor

TargetDescriptor parcel/packages/core/types/index.js:148

The target format when using the JS API.
(Same as PackageTargetDescriptor, but distDir is required.)

type TargetDescriptor = {|
  ...PackageTargetDescriptor,
  +distDir: FilePath,
  +distEntry?: FilePath,
|}
Referenced by:
InitialParcelOptions

SourceType parcel/packages/core/types/index.js:154

Type
type SourceType = 'script' | 'module';
Referenced by:
Environment, EnvironmentOptions

EnvironmentOptions parcel/packages/core/types/index.js:159

This is used when creating an Environment (see that).

type EnvironmentOptions = {|
  +context?: EnvironmentContext,
  +engines?: Engines,
  +includeNodeModules?: boolean | Array<PackageName> | {
    [PackageName]: boolean,
    ...
  },
  +outputFormat?: OutputFormat,
  +sourceType?: SourceType,
  +isLibrary?: boolean,
  +shouldOptimize?: boolean,
  +shouldScopeHoist?: boolean,
  +sourceMap?: ?TargetSourceMapOptions,
  +loc?: ?SourceLocation,
|}
Referenced by:
DependencyOptions, MutableAsset, RuntimeAsset, TransformerResult

VersionMap parcel/packages/core/types/index.js:187

A resolved browserslist, e.g.:


{
  edge: '76',
  firefox: '67',
  chrome: '63',
  safari: '11.1',
  opera: '50',
}

type VersionMap = {
}
Referenced by:
Environment

EnvironmentFeature parcel/packages/core/types/index.js:192

Type
type EnvironmentFeature = 'esmodules' | 'dynamic-import' | 'worker-module' | 'service-worker-module' | 'import-meta-url' | 'arrow-functions';
Referenced by:
Environment

Environment parcel/packages/core/types/index.js:203

Defines the environment in for the output bundle

interface Environment {
  +id: string,
  +context: EnvironmentContext,
  +engines: Engines,
  +includeNodeModules: boolean | Array<PackageName> | {
    [PackageName]: boolean,
    ...
  },

Whether to include all/none packages (true / false), an array of package names to include, or an object (of a package is not specified, it's included).

  +outputFormat: OutputFormat,
  +sourceType: SourceType,
  +isLibrary: boolean,

Whether this is a library build (e.g. less loaders)

  +shouldOptimize: boolean,

Whether the output should be minified.

  +shouldScopeHoist: boolean,

Whether scope hoisting is enabled.

  +sourceMap: ?TargetSourceMapOptions,
  +loc: ?SourceLocation,
  isBrowser(): boolean,

Whether context specifies a browser context.

  isNode(): boolean,

Whether context specifies a node context.

  isElectron(): boolean,

Whether context specifies an electron context.

  isWorker(): boolean,

Whether context specifies a worker context.

  isWorklet(): boolean,

Whether context specifies a worklet context.

  isIsolated(): boolean,

Whether context specifies an isolated context (can't access other loaded ancestor bundles).

  matchesEngines(minVersions: VersionMap, defaultValue?: boolean): boolean,
  supports(feature: EnvironmentFeature, defaultValue?: boolean): boolean,
}
Referenced by:
BaseAsset, Bundle, Config, CreateBundleOpts, Dependency, EnvironmentOptions, PackageTargetDescriptor, Target

PackageDependencies parcel/packages/core/types/index.js:245

Format of pkg#dependencies, pkg#devDependencies, pkg#peerDependencies

type PackageDependencies = {|
|}
Referenced by:
PackageJSON

PackageJSON parcel/packages/core/types/index.js:252

Format of package.json

type PackageJSON = {
  name: PackageName,
  version: Semver,
  type?: 'module',
  main?: FilePath,
  module?: FilePath,
  types?: FilePath,
  browser?: FilePath | {
    [FilePath]: FilePath | boolean,
    ...
  },
  source?: FilePath | Array<FilePath>,
  alias?: {
    [PackageName | FilePath | Glob]: PackageName | FilePath,
    ...
  },
  browserslist?: Array<string> | {
    [string]: Array<string>
  },
  engines?: Engines,
  targets?: {
    [string]: PackageTargetDescriptor,
    ...
  },
  dependencies?: PackageDependencies,
  devDependencies?: PackageDependencies,
  peerDependencies?: PackageDependencies,
  sideEffects?: boolean | FilePath | Array<FilePath>,
  bin?: string | {|
    [string]: FilePath
  |},
}
Referenced by:
Config

LogLevel parcel/packages/core/types/index.js:273

Type
type LogLevel = 'none' | 'error' | 'warn' | 'info' | 'verbose';
Referenced by:
InitialParcelOptions, PluginOptions

BuildMode parcel/packages/core/types/index.js:274

Type
type BuildMode = 'development' | 'production' | string;
Referenced by:
InitialParcelOptions, PluginOptions

DetailedReportOptions parcel/packages/core/types/index.js:275 

type DetailedReportOptions = {|
  assetsPerBundle?: number,
|}
Referenced by:
InitialParcelOptions, PluginOptions

InitialParcelOptions parcel/packages/core/types/index.js:279 

type InitialParcelOptions = {|
  +entries?: FilePath | Array<FilePath>,
  +config?: DependencySpecifier,
  +defaultConfig?: DependencySpecifier,
  +env?: EnvMap,
  +targets?: ?(Array<string> | {
    +[string]: TargetDescriptor,
    ...
  }),
  +shouldDisableCache?: boolean,
  +cacheDir?: FilePath,
  +mode?: BuildMode,
  +hmrOptions?: ?HMROptions,
  +shouldContentHash?: boolean,
  +serveOptions?: InitialServerOptions | false,
  +shouldAutoInstall?: boolean,
  +logLevel?: LogLevel,
  +shouldProfile?: boolean,
  +shouldPatchConsole?: boolean,
  +shouldBuildLazily?: boolean,
  +inputFS?: FileSystem,
  +outputFS?: FileSystem,
  +cache?: Cache,
  +workerFarm?: WorkerFarm,
  +packageManager?: PackageManager,
  +detailedReport?: ?DetailedReportOptions,
  +defaultTargetOptions?: {|
    +shouldOptimize?: boolean,
    +shouldScopeHoist?: boolean,
    +sourceMaps?: boolean,
    +publicUrl?: string,
    +distDir?: FilePath,
    +engines?: Engines,
    +outputFormat?: OutputFormat,
    +isLibrary?: boolean,
  |},
  +additionalReporters?: Array<{|
    packageName: DependencySpecifier,
    resolveFrom: FilePath,
  |}>,
|}

InitialServerOptions parcel/packages/core/types/index.js:325 

type InitialServerOptions = {|
  +publicUrl?: string,
  +host?: string,
  +port: number,
  +https?: HTTPSOptions | boolean,
|}
Referenced by:
InitialParcelOptions

PluginOptions parcel/packages/core/types/index.js:332 

interface PluginOptions {
  +mode: BuildMode,
  +env: EnvMap,
  +hmrOptions: ?HMROptions,
  +serveOptions: ServerOptions | false,
  +shouldBuildLazily: boolean,
  +shouldAutoInstall: boolean,
  +logLevel: LogLevel,
  +projectRoot: FilePath,
  +cacheDir: FilePath,
  +inputFS: FileSystem,
  +outputFS: FileSystem,
  +packageManager: PackageManager,
  +instanceId: string,
  +detailedReport: ?DetailedReportOptions,
}
Referenced by:
Bundler, Compressor, DedicatedThreadValidator, MultiThreadValidator, Namer, Optimizer, Packager, Reporter, Resolver, Runtime, Transformer

ServerOptions parcel/packages/core/types/index.js:349 

type ServerOptions = {|
  +distDir: FilePath,
  +host?: string,
  +port: number,
  +https?: HTTPSOptions | boolean,
  +publicUrl?: string,
|}
Referenced by:
PluginOptions

HTTPSOptions parcel/packages/core/types/index.js:357 

type HTTPSOptions = {|
  +cert: FilePath,
  +key: FilePath,
|}
Referenced by:
InitialServerOptions, ServerOptions

SourceLocation parcel/packages/core/types/index.js:365

Source locations are 1-based, meaning lines and columns start at 1

type SourceLocation = {|
  +filePath: string,
  +start: {|
    +line: number,
    +column: number,
  |},

inclusive

  +end: {|
    +line: number,
    +column: number,
  |},

exclusive

|}
Referenced by:
AssetSymbols, Dependency, DependencyOptions, Environment, EnvironmentOptions, MutableAssetSymbols, MutableDependencySymbols, SymbolResolution, Target, TransformerResult

Meta parcel/packages/core/types/index.js:382

An object that plugins can write arbitatry data to.

Type
type Meta = JSONObject;
Referenced by:
AssetSymbols, BaseAsset, Dependency, DependencyOptions, MutableAssetSymbols, MutableDependencySymbols, TransformerResult

Symbol parcel/packages/core/types/index.js:387

An identifier in an asset (likely imported/exported).

Type
type Symbol = string;
Referenced by:
AssetSymbols, BundleGraph, DependencyOptions, ExportSymbolResolution, MutableAssetSymbols, MutableDependencySymbols, SymbolResolution, TransformerResult

AssetSymbols parcel/packages/core/types/index.js:392

A map of export names to the corresponding asset's local variable names.

interface AssetSymbols extends Iterable<[Symbol, {|
  local: Symbol,
  loc: ?SourceLocation,
  meta?: ?Meta,
|}]> {
  +isCleared: boolean,

The exports of the asset are unknown, rather than just empty. This is the default state.

  get(exportSymbol: Symbol): ?{|
    local: Symbol,
    loc: ?SourceLocation,
    meta?: ?Meta,
  |},
  hasExportSymbol(exportSymbol: Symbol): boolean,
  hasLocalSymbol(local: Symbol): boolean,
  exportSymbols(): Iterable<Symbol>,
}
Referenced by:
BaseAsset, MutableAssetSymbols

MutableAssetSymbols parcel/packages/core/types/index.js:409 

interface MutableAssetSymbols extends AssetSymbols {
  ensure(): void,

Initilizes the map, sets isCleared to false.

  set(exportSymbol: Symbol, local: Symbol, loc: ?SourceLocation, meta?: ?Meta): void,
  delete(exportSymbol: Symbol): void,
}
Referenced by:
MutableAsset

MutableDependencySymbols parcel/packages/core/types/index.js:426

isWeak means: the symbol is not used by the parent asset itself and is merely reexported

interface MutableDependencySymbols extends Iterable<[Symbol, {|
  local: Symbol,
  loc: ?SourceLocation,
  isWeak: boolean,
  meta?: ?Meta,
|}]> {
  ensure(): void,

Initilizes the map, sets isCleared to false.

  +isCleared: boolean,

The symbols taht are imports are unknown, rather than just empty. This is the default state.

  get(exportSymbol: Symbol): ?{|
    local: Symbol,
    loc: ?SourceLocation,
    isWeak: boolean,
    meta?: ?Meta,
  |},
  hasExportSymbol(exportSymbol: Symbol): boolean,
  hasLocalSymbol(local: Symbol): boolean,
  exportSymbols(): Iterable<Symbol>,
  set(exportSymbol: Symbol, local: Symbol, loc: ?SourceLocation, isWeak: ?boolean): void,
  delete(exportSymbol: Symbol): void,
}
Referenced by:
Dependency

DependencyPriority parcel/packages/core/types/index.js:457

Type
type DependencyPriority = 'sync' | 'parallel' | 'lazy';
Referenced by:
Dependency, DependencyOptions, ResolveResult

SpecifierType parcel/packages/core/types/index.js:458

Type
type SpecifierType = 'commonjs' | 'esm' | 'url' | 'custom';
Referenced by:
Dependency, DependencyOptions

File parcel/packages/core/types/index.js:601 

type File = {|
  +filePath: FilePath,
  +hash?: string,
|}

BundleBehavior parcel/packages/core/types/index.js:614

Type
type BundleBehavior = 'inline' | 'isolated';
Referenced by:
BaseAsset, Bundle, CreateBundleOpts, Dependency, DependencyOptions, MutableAsset, TransformerResult

DevDepOptions parcel/packages/core/types/index.js:760 

type DevDepOptions = {|
  specifier: DependencySpecifier,
  resolveFrom: FilePath,
  range?: ?SemverRange,
  additionalInvalidations?: Array<{|
    specifier: DependencySpecifier,
    resolveFrom: FilePath,
    range?: ?SemverRange,
  |}>,

When this dev dependency is invalidated, also invalidate these dependencies. This is useful if the parcel plugin or another parent dependency has its own cache for this dev dependency other than Node's require cache.

|}
Referenced by:
Config

Stats parcel/packages/core/types/index.js:842 

type Stats = {|
  time: number,
  size: number,
|}
Referenced by:
Asset, PackagedBundle

Blob parcel/packages/core/types/index.js:855

Type
type Blob = string | Buffer | Readable;
Referenced by:
BundleResult, GenerateOutput, Optimizer, Packager, TransformerResult

Async parcel/packages/core/types/index.js:909

Type
type Async<T> = T | Promise<T>;
Referenced by:
Bundler, Compressor, DedicatedThreadValidator, MultiThreadValidator, Namer, Optimizer, Packager, Reporter, Resolver, Runtime, Transformer

PackagedBundle parcel/packages/core/types/index.js:1264 

interface PackagedBundle extends NamedBundle {
  +filePath: FilePath,

The absolute file path of the written bundle, including the final content hash if any.

  +stats: Stats,

Statistics about the bundle.

}
Referenced by:
BuildSuccessEvent

GlobInvalidation parcel/packages/core/types/index.js:1433 

type GlobInvalidation = {|
  glob: Glob,
|}
Referenced by:
FileCreateInvalidation

FileInvalidation parcel/packages/core/types/index.js:1437 

type FileInvalidation = {|
  filePath: FilePath,
|}
Referenced by:
FileCreateInvalidation

FileAboveInvalidation parcel/packages/core/types/index.js:1441 

type FileAboveInvalidation = {|
  fileName: string,
  aboveFilePath: FilePath,
|}
Referenced by:
FileCreateInvalidation

FileCreateInvalidation parcel/packages/core/types/index.js:1446

Type
type FileCreateInvalidation = FileInvalidation | GlobInvalidation | FileAboveInvalidation;
Referenced by:
Config, MutableAsset, ResolveResult

ErrorWithCode parcel/packages/core/types/index.js:1803 

interface ErrorWithCode extends Error {
  +code?: string,
}

IDisposable parcel/packages/core/types/index.js:1807 

interface IDisposable {
  dispose(): mixed,
}

AsyncSubscription parcel/packages/core/types/index.js:1811 

type AsyncSubscription = {|
  unsubscribe(): Promise<mixed>,
|}