polyfill

README

Polyfill for quickjs-go

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Features

• fetch: fetch
• base64: atob and btoa
• window: window
• console: console.log and console.error and console.warn and console.info and console.debug and console.trace
• timers: setTimeout and setInterval and clearTimeout and clearInterval

Usage

package main
import (
	"time"

	"github.com/fiatjaf/quickjs-go"
	"github.com/fiatjaf/quickjs-go/polyfill"
)

func main() {
	// Create a new runtime
	rt := quickjs.NewRuntime()
	defer rt.Close()

	// Create a new context
	ctx := rt.NewContext()
	defer ctx.Close()

	// Inject polyfills to the context
	polyfill.InjectAll(ctx)

	ret, _ := ctx.Eval(`
	setTimeout(() => {
		fetch('https://api.github.com/users/buke', {Method: 'GET'}).then(response => response.json()).then(data => {
			console.log(data.login);
		});
	}, 50);
	`)
	defer ret.Free()

	// Wait for the timeout to finish
	time.Sleep(time.Millisecond * 100)

	rt.ExecuteAllPendingJobs()

	// Output:
	// buke
}

Documentation

Go Reference & more examples: https://pkg.go.dev/github.com/fiatjaf/quickjs-go/polyfill

License

MIT

Documentation

Overview

Example

// Create a new runtime
rt := quickjs.NewRuntime()
defer rt.Close()

// Create a new context
ctx := rt.NewContext()
defer ctx.Close()

// Inject polyfills to the context
polyfill.InjectAll(ctx)

srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
	w.WriteHeader(http.StatusOK)
	w.Header().Set("Content-Type", "application/json; utf-8")
	_, _ = w.Write([]byte(`{"status": true}`))
}))

ret, _ := ctx.Eval(fmt.Sprintf(`
	setTimeout(() => {
		fetch('%s', {Method: 'GET'}).then(response => response.json()).then(data => {
			console.log(data.status);
		});
	}, 50);
	`, srv.URL))

defer ret.Free()

time.Sleep(time.Millisecond * 100)

rt.ExecuteAllPendingJobs()

Output:

true

Index

• func InjectAll(ctx *quickjs.Context)

Examples

• Package

Functions

func InjectAll

func InjectAll(ctx *quickjs.Context)