package api

esbuild – github.com/evanw/esbuild/pkg/api Index | Files

package api

import "github.com/evanw/esbuild/pkg/api"

This API exposes esbuild's two main operations: building and transforming. It's intended for integrating esbuild into other tools as a library.

If you are just trying to run esbuild from Go without the overhead of creating a child process, there is also an API for the command-line interface itself: https://godoc.org/github.com/evanw/esbuild/pkg/cli.

Build API

This function runs an end-to-end build operation. It takes an array of file paths as entry points, parses them and all of their dependencies, and returns the output files to write to the file system. The available options roughly correspond to esbuild's command-line flags.

Example usage:

package main

import (
    "os"

    "github.com/evanw/esbuild/pkg/api"
)

func main() {
    result := api.Build(api.BuildOptions{
        EntryPoints: []string{"input.js"},
        Outfile:     "output.js",
        Bundle:      true,
        Write:       true,
        LogLevel:    api.LogLevelInfo,
    })

    if len(result.Errors) > 0 {
        os.Exit(1)
    }
}

Transform API

This function transforms a string of source code into JavaScript. It can be used to minify JavaScript, convert TypeScript/JSX to JavaScript, or convert newer JavaScript to older JavaScript. The available options roughly correspond to esbuild's command-line flags.

Example usage:

package main

import (
    "fmt"
    "os"

    "github.com/evanw/esbuild/pkg/api"
)

func main() {
    jsx := `
        import * as React from 'react'
        import * as ReactDOM from 'react-dom'

        ReactDOM.render(
            <h1>Hello, world!</h1>,
            document.getElementById('root')
        );
    `

    result := api.Transform(jsx, api.TransformOptions{
        Loader: api.LoaderJSX,
    })

    fmt.Printf("%d errors and %d warnings\n",
        len(result.Errors), len(result.Warnings))

    os.Stdout.Write(result.Code)
}

Index ¶

func AnalyzeMetafile(metafile string, opts AnalyzeMetafileOptions) string
func FormatMessages(msgs []Message, opts FormatMessagesOptions) []string
type AnalyzeMetafileOptions
type BuildOptions
type BuildResult

func Build(options BuildOptions) BuildResult

type Charset
type Drop
type Engine
type EngineName
type EntryPoint
type Format
type FormatMessagesOptions
type JSXMode
type LegalComments
type Loader
type Location
type LogLevel
type MangleQuoted
type Message
type MessageKind
type Note
type OnLoadArgs
type OnLoadOptions
type OnLoadResult
type OnResolveArgs
type OnResolveOptions
type OnResolveResult
type OnStartResult
type OutputFile
type Platform
type Plugin
type PluginBuild
type ResolveKind
type ResolveOptions
type ResolveResult
type ServeOnRequestArgs
type ServeOptions
type ServeResult

func Serve(serveOptions ServeOptions, buildOptions BuildOptions) (ServeResult, error)

type SideEffects
type SourceMap
type SourcesContent
type StderrColor
type StdinOptions
type Target
type TransformOptions
type TransformResult

func Transform(input string, options TransformOptions) TransformResult

type TreeShaking
type WatchMode

Functions ¶

func AnalyzeMetafile ¶

func AnalyzeMetafile(metafile string, opts AnalyzeMetafileOptions) string

Documentation: https://esbuild.github.io/api/#analyze

func FormatMessages ¶

func FormatMessages(msgs []Message, opts FormatMessagesOptions) []string

Types ¶

type AnalyzeMetafileOptions ¶

type AnalyzeMetafileOptions struct {
	Color   bool
	Verbose bool
}

type BuildOptions ¶

type BuildOptions struct {
	Color       StderrColor         // Documentation: https://esbuild.github.io/api/#color
	LogLevel    LogLevel            // Documentation: https://esbuild.github.io/api/#log-level
	LogLimit    int                 // Documentation: https://esbuild.github.io/api/#log-limit
	LogOverride map[string]LogLevel // Documentation: https://esbuild.github.io/api/#log-override

	Sourcemap      SourceMap      // Documentation: https://esbuild.github.io/api/#sourcemap
	SourceRoot     string         // Documentation: https://esbuild.github.io/api/#source-root
	SourcesContent SourcesContent // Documentation: https://esbuild.github.io/api/#sources-content

	Target    Target          // Documentation: https://esbuild.github.io/api/#target
	Engines   []Engine        // Documentation: https://esbuild.github.io/api/#target
	Supported map[string]bool // Documentation: https://esbuild.github.io/api/#supported

	MangleProps       string                 // Documentation: https://esbuild.github.io/api/#mangle-props
	ReserveProps      string                 // Documentation: https://esbuild.github.io/api/#mangle-props
	MangleQuoted      MangleQuoted           // Documentation: https://esbuild.github.io/api/#mangle-props
	MangleCache       map[string]interface{} // Documentation: https://esbuild.github.io/api/#mangle-props
	Drop              Drop                   // Documentation: https://esbuild.github.io/api/#drop
	MinifyWhitespace  bool                   // Documentation: https://esbuild.github.io/api/#minify
	MinifyIdentifiers bool                   // Documentation: https://esbuild.github.io/api/#minify
	MinifySyntax      bool                   // Documentation: https://esbuild.github.io/api/#minify
	Charset           Charset                // Documentation: https://esbuild.github.io/api/#charset
	TreeShaking       TreeShaking            // Documentation: https://esbuild.github.io/api/#tree-shaking
	IgnoreAnnotations bool                   // Documentation: https://esbuild.github.io/api/#ignore-annotations
	LegalComments     LegalComments          // Documentation: https://esbuild.github.io/api/#legal-comments

	JSXMode         JSXMode // Documentation: https://esbuild.github.io/api/#jsx-mode
	JSXFactory      string  // Documentation: https://esbuild.github.io/api/#jsx-factory
	JSXFragment     string  // Documentation: https://esbuild.github.io/api/#jsx-fragment
	JSXImportSource string  // Documentation: https://esbuild.github.io/api/#jsx-import-source
	JSXDev          bool    // Documentation: https://esbuild.github.io/api/#jsx-dev
	JSXSideEffects  bool    // Documentation: https://esbuild.github.io/api/#jsx-side-effects

	Define    map[string]string // Documentation: https://esbuild.github.io/api/#define
	Pure      []string          // Documentation: https://esbuild.github.io/api/#pure
	KeepNames bool              // Documentation: https://esbuild.github.io/api/#keep-names

	GlobalName        string            // Documentation: https://esbuild.github.io/api/#global-name
	Bundle            bool              // Documentation: https://esbuild.github.io/api/#bundle
	PreserveSymlinks  bool              // Documentation: https://esbuild.github.io/api/#preserve-symlinks
	Splitting         bool              // Documentation: https://esbuild.github.io/api/#splitting
	Outfile           string            // Documentation: https://esbuild.github.io/api/#outfile
	Metafile          bool              // Documentation: https://esbuild.github.io/api/#metafile
	Outdir            string            // Documentation: https://esbuild.github.io/api/#outdir
	Outbase           string            // Documentation: https://esbuild.github.io/api/#outbase
	AbsWorkingDir     string            // Documentation: https://esbuild.github.io/api/#working-directory
	Platform          Platform          // Documentation: https://esbuild.github.io/api/#platform
	Format            Format            // Documentation: https://esbuild.github.io/api/#format
	External          []string          // Documentation: https://esbuild.github.io/api/#external
	MainFields        []string          // Documentation: https://esbuild.github.io/api/#main-fields
	Conditions        []string          // Documentation: https://esbuild.github.io/api/#conditions
	Loader            map[string]Loader // Documentation: https://esbuild.github.io/api/#loader
	ResolveExtensions []string          // Documentation: https://esbuild.github.io/api/#resolve-extensions
	Tsconfig          string            // Documentation: https://esbuild.github.io/api/#tsconfig
	OutExtensions     map[string]string // Documentation: https://esbuild.github.io/api/#out-extension
	PublicPath        string            // Documentation: https://esbuild.github.io/api/#public-path
	Inject            []string          // Documentation: https://esbuild.github.io/api/#inject
	Banner            map[string]string // Documentation: https://esbuild.github.io/api/#banner
	Footer            map[string]string // Documentation: https://esbuild.github.io/api/#footer
	NodePaths         []string          // Documentation: https://esbuild.github.io/api/#node-paths

	EntryNames string // Documentation: https://esbuild.github.io/api/#entry-names
	ChunkNames string // Documentation: https://esbuild.github.io/api/#chunk-names
	AssetNames string // Documentation: https://esbuild.github.io/api/#asset-names

	EntryPoints         []string     // Documentation: https://esbuild.github.io/api/#entry-points
	EntryPointsAdvanced []EntryPoint // Documentation: https://esbuild.github.io/api/#entry-points

	Stdin          *StdinOptions // Documentation: https://esbuild.github.io/api/#stdin
	Write          bool          // Documentation: https://esbuild.github.io/api/#write
	AllowOverwrite bool          // Documentation: https://esbuild.github.io/api/#allow-overwrite
	Incremental    bool          // Documentation: https://esbuild.github.io/api/#incremental
	Plugins        []Plugin      // Documentation: https://esbuild.github.io/plugins/

	Watch *WatchMode // Documentation: https://esbuild.github.io/api/#watch
}

type BuildResult ¶

type BuildResult struct {
	Errors   []Message
	Warnings []Message

	OutputFiles []OutputFile
	Metafile    string
	MangleCache map[string]interface{}

	Rebuild func() BuildResult // Only when "Incremental: true"
	Stop    func()             // Only when "Watch: true"
}

func Build ¶

func Build(options BuildOptions) BuildResult

Documentation: https://esbuild.github.io/api/#build-api

type Charset ¶

type Charset uint8

const (
	CharsetDefault Charset = iota
	CharsetASCII
	CharsetUTF8
)

type Drop ¶

type Drop uint8

const (
	DropConsole Drop = 1 << iota
	DropDebugger
)

type Engine ¶

type Engine struct {
	Name    EngineName
	Version string
}

type EngineName ¶

type EngineName uint8

const (
	EngineChrome EngineName = iota
	EngineEdge
	EngineFirefox
	EngineIE
	EngineIOS
	EngineNode
	EngineOpera
	EngineSafari
	EngineHermes
	EngineRhino
)

type EntryPoint ¶

type EntryPoint struct {
	InputPath  string
	OutputPath string
}

type Format ¶

type Format uint8

const (
	FormatDefault Format = iota
	FormatIIFE
	FormatCommonJS
	FormatESModule
)

type FormatMessagesOptions ¶

type FormatMessagesOptions struct {
	TerminalWidth int
	Kind          MessageKind
	Color         bool
}

type JSXMode ¶

type JSXMode uint8

const (
	JSXModeTransform JSXMode = iota
	JSXModePreserve
	JSXModeAutomatic
)

type LegalComments ¶

type LegalComments uint8

const (
	LegalCommentsDefault LegalComments = iota
	LegalCommentsNone
	LegalCommentsInline
	LegalCommentsEndOfFile
	LegalCommentsLinked
	LegalCommentsExternal
)

type Loader ¶

type Loader uint8

const (
	LoaderNone Loader = iota
	LoaderBase64
	LoaderBinary
	LoaderCopy
	LoaderCSS
	LoaderDataURL
	LoaderDefault
	LoaderFile
	LoaderJS
	LoaderJSON
	LoaderJSX
	LoaderText
	LoaderTS
	LoaderTSX
)

type Location ¶

type Location struct {
	File       string
	Namespace  string
	Line       int // 1-based
	Column     int // 0-based, in bytes
	Length     int // in bytes
	LineText   string
	Suggestion string
}

type LogLevel ¶

type LogLevel uint8

const (
	LogLevelSilent LogLevel = iota
	LogLevelVerbose
	LogLevelDebug
	LogLevelInfo
	LogLevelWarning
	LogLevelError
)

type MangleQuoted ¶

type MangleQuoted uint8

const (
	MangleQuotedFalse MangleQuoted = iota
	MangleQuotedTrue
)

type Message ¶

type Message struct {
	ID         string
	PluginName string
	Text       string
	Location   *Location
	Notes      []Note

	// Optional user-specified data that is passed through unmodified. You can
	// use this to stash the original error, for example.
	Detail interface{}
}

type MessageKind ¶

type MessageKind uint8

const (
	ErrorMessage MessageKind = iota
	WarningMessage
)

type Note ¶

type Note struct {
	Text     string
	Location *Location
}

type OnLoadArgs ¶

type OnLoadArgs struct {
	Path       string
	Namespace  string
	Suffix     string
	PluginData interface{}
}

type OnLoadOptions ¶

type OnLoadOptions struct {
	Filter    string
	Namespace string
}

type OnLoadResult ¶

type OnLoadResult struct {
	PluginName string

	Errors   []Message
	Warnings []Message

	Contents   *string
	ResolveDir string
	Loader     Loader
	PluginData interface{}

	WatchFiles []string
	WatchDirs  []string
}

type OnResolveArgs ¶

type OnResolveArgs struct {
	Path       string
	Importer   string
	Namespace  string
	ResolveDir string
	Kind       ResolveKind
	PluginData interface{}
}

type OnResolveOptions ¶

type OnResolveOptions struct {
	Filter    string
	Namespace string
}

type OnResolveResult ¶

type OnResolveResult struct {
	PluginName string

	Errors   []Message
	Warnings []Message

	Path        string
	External    bool
	SideEffects SideEffects
	Namespace   string
	Suffix      string
	PluginData  interface{}

	WatchFiles []string
	WatchDirs  []string
}

type OnStartResult ¶

type OnStartResult struct {
	Errors   []Message
	Warnings []Message
}

type OutputFile ¶

type OutputFile struct {
	Path     string
	Contents []byte
}

type Platform ¶

type Platform uint8

const (
	PlatformDefault Platform = iota
	PlatformBrowser
	PlatformNode
	PlatformNeutral
)

type Plugin ¶

type Plugin struct {
	Name  string
	Setup func(PluginBuild)
}

type PluginBuild ¶

type PluginBuild struct {
	InitialOptions *BuildOptions
	Resolve        func(path string, options ResolveOptions) ResolveResult
	OnStart        func(callback func() (OnStartResult, error))
	OnEnd          func(callback func(result *BuildResult))
	OnResolve      func(options OnResolveOptions, callback func(OnResolveArgs) (OnResolveResult, error))
	OnLoad         func(options OnLoadOptions, callback func(OnLoadArgs) (OnLoadResult, error))
}

type ResolveKind ¶

type ResolveKind uint8

const (
	ResolveEntryPoint ResolveKind = iota
	ResolveJSImportStatement
	ResolveJSRequireCall
	ResolveJSDynamicImport
	ResolveJSRequireResolve
	ResolveCSSImportRule
	ResolveCSSURLToken
)

type ResolveOptions ¶

type ResolveOptions struct {
	PluginName string
	Importer   string
	Namespace  string
	ResolveDir string
	Kind       ResolveKind
	PluginData interface{}
}

type ResolveResult ¶

type ResolveResult struct {
	Errors   []Message
	Warnings []Message

	Path        string
	External    bool
	SideEffects bool
	Namespace   string
	Suffix      string
	PluginData  interface{}
}

type ServeOnRequestArgs ¶

type ServeOnRequestArgs struct {
	RemoteAddress string
	Method        string
	Path          string
	Status        int
	TimeInMS      int // The time to generate the response, not to send it
}

type ServeOptions ¶

type ServeOptions struct {
	Port      uint16
	Host      string
	Servedir  string
	OnRequest func(ServeOnRequestArgs)
}

Documentation: https://esbuild.github.io/api/#serve-arguments

type ServeResult ¶

type ServeResult struct {
	Port uint16
	Host string
	Wait func() error
	Stop func()
}

Documentation: https://esbuild.github.io/api/#serve-return-values

func Serve ¶

func Serve(serveOptions ServeOptions, buildOptions BuildOptions) (ServeResult, error)

Documentation: https://esbuild.github.io/api/#serve

type SideEffects ¶

type SideEffects uint8

const (
	SideEffectsTrue SideEffects = iota
	SideEffectsFalse
)

type SourceMap ¶

type SourceMap uint8

const (
	SourceMapNone SourceMap = iota
	SourceMapInline
	SourceMapLinked
	SourceMapExternal
	SourceMapInlineAndExternal
)

type SourcesContent ¶

type SourcesContent uint8

const (
	SourcesContentInclude SourcesContent = iota
	SourcesContentExclude
)

type StderrColor ¶

type StderrColor uint8

const (
	ColorIfTerminal StderrColor = iota
	ColorNever
	ColorAlways
)

type StdinOptions ¶

type StdinOptions struct {
	Contents   string
	ResolveDir string
	Sourcefile string
	Loader     Loader
}

type Target ¶

type Target uint8

const (
	DefaultTarget Target = iota
	ESNext
	ES5
	ES2015
	ES2016
	ES2017
	ES2018
	ES2019
	ES2020
	ES2021
	ES2022
)

type TransformOptions ¶

type TransformOptions struct {
	Color       StderrColor         // Documentation: https://esbuild.github.io/api/#color
	LogLevel    LogLevel            // Documentation: https://esbuild.github.io/api/#log-level
	LogLimit    int                 // Documentation: https://esbuild.github.io/api/#log-limit
	LogOverride map[string]LogLevel // Documentation: https://esbuild.github.io/api/#log-override

	Sourcemap      SourceMap      // Documentation: https://esbuild.github.io/api/#sourcemap
	SourceRoot     string         // Documentation: https://esbuild.github.io/api/#source-root
	SourcesContent SourcesContent // Documentation: https://esbuild.github.io/api/#sources-content

	Target    Target          // Documentation: https://esbuild.github.io/api/#target
	Engines   []Engine        // Documentation: https://esbuild.github.io/api/#target
	Supported map[string]bool // Documentation: https://esbuild.github.io/api/#supported

	Platform   Platform // Documentation: https://esbuild.github.io/api/#platform
	Format     Format   // Documentation: https://esbuild.github.io/api/#format
	GlobalName string   // Documentation: https://esbuild.github.io/api/#global-name

	MangleProps       string                 // Documentation: https://esbuild.github.io/api/#mangle-props
	ReserveProps      string                 // Documentation: https://esbuild.github.io/api/#mangle-props
	MangleQuoted      MangleQuoted           // Documentation: https://esbuild.github.io/api/#mangle-props
	MangleCache       map[string]interface{} // Documentation: https://esbuild.github.io/api/#mangle-props
	Drop              Drop                   // Documentation: https://esbuild.github.io/api/#drop
	MinifyWhitespace  bool                   // Documentation: https://esbuild.github.io/api/#minify
	MinifyIdentifiers bool                   // Documentation: https://esbuild.github.io/api/#minify
	MinifySyntax      bool                   // Documentation: https://esbuild.github.io/api/#minify
	Charset           Charset                // Documentation: https://esbuild.github.io/api/#charset
	TreeShaking       TreeShaking            // Documentation: https://esbuild.github.io/api/#tree-shaking
	IgnoreAnnotations bool                   // Documentation: https://esbuild.github.io/api/#ignore-annotations
	LegalComments     LegalComments          // Documentation: https://esbuild.github.io/api/#legal-comments

	JSXMode         JSXMode // Documentation: https://esbuild.github.io/api/#jsx
	JSXFactory      string  // Documentation: https://esbuild.github.io/api/#jsx-factory
	JSXFragment     string  // Documentation: https://esbuild.github.io/api/#jsx-fragment
	JSXImportSource string  // Documentation: https://esbuild.github.io/api/#jsx-import-source
	JSXDev          bool    // Documentation: https://esbuild.github.io/api/#jsx-dev
	JSXSideEffects  bool    // Documentation: https://esbuild.github.io/api/#jsx-side-effects

	TsconfigRaw string // Documentation: https://esbuild.github.io/api/#tsconfig-raw
	Banner      string // Documentation: https://esbuild.github.io/api/#banner
	Footer      string // Documentation: https://esbuild.github.io/api/#footer

	Define    map[string]string // Documentation: https://esbuild.github.io/api/#define
	Pure      []string          // Documentation: https://esbuild.github.io/api/#pure
	KeepNames bool              // Documentation: https://esbuild.github.io/api/#keep-names

	Sourcefile string // Documentation: https://esbuild.github.io/api/#sourcefile
	Loader     Loader // Documentation: https://esbuild.github.io/api/#loader
}

type TransformResult ¶

type TransformResult struct {
	Errors   []Message
	Warnings []Message

	Code []byte
	Map  []byte

	MangleCache map[string]interface{}
}

func Transform ¶

func Transform(input string, options TransformOptions) TransformResult

Documentation: https://esbuild.github.io/api/#transform-api

type TreeShaking ¶

type TreeShaking uint8

const (
	TreeShakingDefault TreeShaking = iota
	TreeShakingFalse
	TreeShakingTrue
)

type WatchMode ¶

type WatchMode struct {
	OnRebuild func(BuildResult)
}

Source Files ¶

api.go api_impl.go api_js_table.go serve_other.go

Version: v0.15.12
Published: Oct 19, 2022
Platform: windows/amd64
Imports: 31 packages
Last checked: 9 minutes ago –

Tools for package owners.

?	: This menu
/	: Search site
f	: Jump to identifier
g then g	: Go to top of page
g then b	: Go to end of page
G	: Go to end of page
g then i	: Go to index
g then e	: Go to examples

package api

Build API

Transform API

Index ¶

Functions ¶

func AnalyzeMetafile ¶

func FormatMessages ¶

Types ¶

type AnalyzeMetafileOptions ¶

type BuildOptions ¶

type BuildResult ¶

func Build ¶

type Charset ¶

type Drop ¶

type Engine ¶

type EngineName ¶

type EntryPoint ¶

type Format ¶

type FormatMessagesOptions ¶

type JSXMode ¶

type LegalComments ¶

type Loader ¶

type Location ¶

type LogLevel ¶

type MangleQuoted ¶

type Message ¶

type MessageKind ¶

type Note ¶

type OnLoadArgs ¶

type OnLoadOptions ¶

type OnLoadResult ¶

type OnResolveArgs ¶

type OnResolveOptions ¶

type OnResolveResult ¶

type OnStartResult ¶

type OutputFile ¶

type Platform ¶

type Plugin ¶

type PluginBuild ¶

type ResolveKind ¶

type ResolveOptions ¶

type ResolveResult ¶

type ServeOnRequestArgs ¶

type ServeOptions ¶

type ServeResult ¶

func Serve ¶

type SideEffects ¶

type SourceMap ¶

type SourcesContent ¶

type StderrColor ¶

type StdinOptions ¶

type Target ¶

type TransformOptions ¶

type TransformResult ¶

func Transform ¶

type TreeShaking ¶

type WatchMode ¶

Source Files ¶

Jump to identifier

Keyboard shortcuts