How to use generateSourceMapLoader method of js Package

Best K6 code snippet using js.generateSourceMapLoader

bundle.go

Source:bundle.go

...72	c := compiler.New(logger)73	c.Options = compiler.Options{74		CompatibilityMode: compatMode,75		Strict:            true,76		SourceMapLoader:   generateSourceMapLoader(logger, filesystems),77	}78	pgm, _, err := c.Compile(code, src.URL.String(), true)79	if err != nil {80		return nil, err81	}82	// Make a bundle, instantiate it into a throwaway VM to populate caches.83	rt := goja.New()84	bundle := Bundle{85		Filename: src.URL,86		Source:   code,87		Program:  pgm,88		BaseInitContext: NewInitContext(logger, rt, c, compatMode, new(context.Context),89			filesystems, loader.Dir(src.URL)),90		RuntimeOptions:    rtOpts,91		CompatibilityMode: compatMode,92		exports:           make(map[string]goja.Callable),93		registry:          registry,94	}95	if err = bundle.instantiate(logger, rt, bundle.BaseInitContext, 0); err != nil {96		return nil, err97	}98	err = bundle.getExports(logger, rt, true)99	if err != nil {100		return nil, err101	}102	return &bundle, nil103}104// NewBundleFromArchive creates a new bundle from an lib.Archive.105func NewBundleFromArchive(106	logger logrus.FieldLogger, arc *lib.Archive, rtOpts lib.RuntimeOptions, registry *metrics.Registry,107) (*Bundle, error) {108	if arc.Type != "js" {109		return nil, fmt.Errorf("expected bundle type 'js', got '%s'", arc.Type)110	}111	if !rtOpts.CompatibilityMode.Valid {112		// `k6 run --compatibility-mode=whatever archive.tar` should override113		// whatever value is in the archive114		rtOpts.CompatibilityMode = null.StringFrom(arc.CompatibilityMode)115	}116	compatMode, err := lib.ValidateCompatibilityMode(rtOpts.CompatibilityMode.String)117	if err != nil {118		return nil, err119	}120	c := compiler.New(logger)121	c.Options = compiler.Options{122		Strict:            true,123		CompatibilityMode: compatMode,124		SourceMapLoader:   generateSourceMapLoader(logger, arc.Filesystems),125	}126	pgm, _, err := c.Compile(string(arc.Data), arc.FilenameURL.String(), true)127	if err != nil {128		return nil, err129	}130	rt := goja.New()131	initctx := NewInitContext(logger, rt, c, compatMode,132		new(context.Context), arc.Filesystems, arc.PwdURL)133	env := arc.Env134	if env == nil {135		// Older archives (<=0.20.0) don't have an "env" property136		env = make(map[string]string)137	}138	for k, v := range rtOpts.Env {139		env[k] = v140	}141	rtOpts.Env = env142	bundle := &Bundle{143		Filename:          arc.FilenameURL,144		Source:            string(arc.Data),145		Program:           pgm,146		Options:           arc.Options,147		BaseInitContext:   initctx,148		RuntimeOptions:    rtOpts,149		CompatibilityMode: compatMode,150		exports:           make(map[string]goja.Callable),151		registry:          registry,152	}153	if err = bundle.instantiate(logger, rt, bundle.BaseInitContext, 0); err != nil {154		return nil, err155	}156	// Grab exported objects, but avoid overwriting options, which would157	// be initialized from the metadata.json at this point.158	err = bundle.getExports(logger, rt, false)159	if err != nil {160		return nil, err161	}162	return bundle, nil163}164func (b *Bundle) makeArchive() *lib.Archive {165	arc := &lib.Archive{166		Type:              "js",167		Filesystems:       b.BaseInitContext.filesystems,168		Options:           b.Options,169		FilenameURL:       b.Filename,170		Data:              []byte(b.Source),171		PwdURL:            b.BaseInitContext.pwd,172		Env:               make(map[string]string, len(b.RuntimeOptions.Env)),173		CompatibilityMode: b.CompatibilityMode.String(),174		K6Version:         consts.Version,175		Goos:              runtime.GOOS,176	}177	// Copy env so changes in the archive are not reflected in the source Bundle178	for k, v := range b.RuntimeOptions.Env {179		arc.Env[k] = v180	}181	return arc182}183// getExports validates and extracts exported objects184func (b *Bundle) getExports(logger logrus.FieldLogger, rt *goja.Runtime, options bool) error {185	exportsV := rt.Get("exports")186	if goja.IsNull(exportsV) || goja.IsUndefined(exportsV) {187		return errors.New("exports must be an object")188	}189	exports := exportsV.ToObject(rt)190	for _, k := range exports.Keys() {191		v := exports.Get(k)192		if fn, ok := goja.AssertFunction(v); ok && k != consts.Options {193			b.exports[k] = fn194			continue195		}196		switch k {197		case consts.Options:198			if !options {199				continue200			}201			data, err := json.Marshal(v.Export())202			if err != nil {203				return err204			}205			dec := json.NewDecoder(bytes.NewReader(data))206			dec.DisallowUnknownFields()207			if err := dec.Decode(&b.Options); err != nil {208				if uerr := json.Unmarshal(data, &b.Options); uerr != nil {209					return uerr210				}211				logger.WithError(err).Warn("There were unknown fields in the options exported in the script")212			}213		case consts.SetupFn:214			return errors.New("exported 'setup' must be a function")215		case consts.TeardownFn:216			return errors.New("exported 'teardown' must be a function")217		}218	}219	if len(b.exports) == 0 {220		return errors.New("no exported functions in script")221	}222	return nil223}224// Instantiate creates a new runtime from this bundle.225func (b *Bundle) Instantiate(226	logger logrus.FieldLogger, vuID uint64, vuImpl *moduleVUImpl,227) (bi *BundleInstance, instErr error) {228	// Instantiate the bundle into a new VM using a bound init context. This uses a context with a229	// runtime, but no state, to allow module-provided types to function within the init context.230	vuImpl.runtime = goja.New()231	init := newBoundInitContext(b.BaseInitContext, vuImpl)232	if err := b.instantiate(logger, vuImpl.runtime, init, vuID); err != nil {233		return nil, err234	}235	rt := vuImpl.runtime236	bi = &BundleInstance{237		Runtime: rt,238		Context: vuImpl.ctxPtr,239		exports: make(map[string]goja.Callable),240		env:     b.RuntimeOptions.Env,241	}242	// Grab any exported functions that could be executed. These were243	// already pre-validated in cmd.validateScenarioConfig(), just get them here.244	exports := rt.Get("exports").ToObject(rt)245	for k := range b.exports {246		fn, _ := goja.AssertFunction(exports.Get(k))247		bi.exports[k] = fn248	}249	jsOptions := rt.Get("options")250	var jsOptionsObj *goja.Object251	if jsOptions == nil || goja.IsNull(jsOptions) || goja.IsUndefined(jsOptions) {252		jsOptionsObj = rt.NewObject()253		rt.Set("options", jsOptionsObj)254	} else {255		jsOptionsObj = jsOptions.ToObject(rt)256	}257	b.Options.ForEachSpecified("json", func(key string, val interface{}) {258		if err := jsOptionsObj.Set(key, val); err != nil {259			instErr = err260		}261	})262	return bi, instErr263}264// Instantiates the bundle into an existing runtime. Not public because it also messes with a bunch265// of other things, will potentially thrash data and makes a mess in it if the operation fails.266func (b *Bundle) instantiate(logger logrus.FieldLogger, rt *goja.Runtime, init *InitContext, vuID uint64) error {267	rt.SetFieldNameMapper(common.FieldNameMapper{})268	rt.SetRandSource(common.NewRandSource())269	exports := rt.NewObject()270	rt.Set("exports", exports)271	module := rt.NewObject()272	_ = module.Set("exports", exports)273	rt.Set("module", module)274	env := make(map[string]string, len(b.RuntimeOptions.Env))275	for key, value := range b.RuntimeOptions.Env {276		env[key] = value277	}278	rt.Set("__ENV", env)279	rt.Set("__VU", vuID)280	_ = rt.Set("console", newConsole(logger))281	if init.compatibilityMode == lib.CompatibilityModeExtended {282		rt.Set("global", rt.GlobalObject())283	}284	// TODO: get rid of the unused ctxPtr, use a real external context (so we285	// can interrupt), build the common.InitEnvironment earlier and reuse it286	initenv := &common.InitEnvironment{287		Logger:      logger,288		FileSystems: init.filesystems,289		CWD:         init.pwd,290		Registry:    b.registry,291	}292	init.moduleVUImpl.initEnv = initenv293	ctx := common.WithInitEnv(context.Background(), initenv)294	*init.moduleVUImpl.ctxPtr = common.WithRuntime(ctx, rt)295	unbindInit := common.BindToGlobal(rt, map[string]interface{}{296		"require": init.Require,297		"open":    init.Open,298	})299	if _, err := rt.RunProgram(b.Program); err != nil {300		var exception *goja.Exception301		if errors.As(err, &exception) {302			err = &scriptException{inner: exception}303		}304		return err305	}306	unbindInit()307	*init.moduleVUImpl.ctxPtr = nil308	// If we've already initialized the original VU init context, forbid309	// any subsequent VUs to open new files310	if vuID == 0 {311		init.allowOnlyOpenedFiles()312	}313	rt.SetRandSource(common.NewRandSource())314	return nil315}316func generateSourceMapLoader(logger logrus.FieldLogger, filesystems map[string]afero.Fs,317) func(path string) ([]byte, error) {318	return func(path string) ([]byte, error) {319		u, err := url.Parse(path)320		if err != nil {321			return nil, err322		}323		data, err := loader.Load(logger, filesystems, u, path)324		if err != nil {325			return nil, err326		}327		return data.Data, nil328	}329}...

generateSourceMapLoader

Using AI Code Generation

1var js = require("js");2js.generateSourceMapLoader("1.go");3var js = require("js");4js.generateSourceMapLoader("2.go");5var js = require("js");6js.generateSourceMapLoader("3.go");7var js = require("js");8js.generateSourceMapLoader("4.go");9var js = require("js");10js.generateSourceMapLoader("5.go");11var js = require("js");12js.generateSourceMapLoader("6.go");13var js = require("js");14js.generateSourceMapLoader("7.go");15var js = require("js");16js.generateSourceMapLoader("8.go");17var js = require("js");18js.generateSourceMapLoader("9.go");19var js = require("js");20js.generateSourceMapLoader("10.go");21var js = require("js");22js.generateSourceMapLoader("11.go");23var js = require("js");24js.generateSourceMapLoader("12.go");25var js = require("js");26js.generateSourceMapLoader("13.go");27var js = require("js");28js.generateSourceMapLoader("14.go");

generateSourceMapLoader

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello, playground")4	js.Global().Set("generateSourceMapLoader", js.FuncOf(generateSourceMapLoader))5	select {}6}7func generateSourceMapLoader(this js.Value, args []js.Value) interface{} {8	fmt.Println("Hello, playground")9}10import (11func main() {12	fmt.Println("Hello, playground")13	js.Global().Set("generateSourceMapLoader", js.FuncOf(generateSourceMapLoader))14	select {}15}16func generateSourceMapLoader(this js.Value, args []js.Value) interface{} {17	fmt.Println("Hello, playground")18}19import (20func main() {21	fmt.Println("Hello, playground")22	js.Global().Set("generateSourceMapLoader", js.FuncOf(generateSourceMapLoader))23	select {}24}25func generateSourceMapLoader(this js.Value, args []js.Value) interface{} {26	fmt.Println("Hello, playground")27}28import (29func main() {30	fmt.Println("Hello, playground")31	js.Global().Set("generateSourceMapLoader", js.FuncOf(generateSourceMapLoader))32	select {}33}34func generateSourceMapLoader(this js.Value, args []js.Value) interface{} {35	fmt.Println("Hello, playground")36}37import (38func main() {39	fmt.Println("Hello, playground")40	js.Global().Set("generateSourceMapLoader", js.FuncOf(generateSourceMapLoader))41	select {}42}43func generateSourceMapLoader(this js.Value, args []js.Value) interface{} {44	fmt.Println("Hello, playground")45}

generateSourceMapLoader

Using AI Code Generation

1import 'dart:html';2import 'package:js/js.dart';3@JS()4external void generateSourceMapLoader(String sourceMap);5void main() {6  var script = new ScriptElement();7  script.type = 'text/javascript';8  script.text = 'console.log("test");';9  document.body.append(script);10  var sourceMap = script.dataset['sourceMap'];11  generateSourceMapLoader(sourceMap);12}

generateSourceMapLoader

Using AI Code Generation

1var obj = new js();2var result = obj.generateSourceMapLoader("test.js", "test.js.map", "test.js");3console.log(result);4var obj = new js();5var result = obj.generateSourceMapLoader("test.js", "test.js.map", "test.js");6console.log(result);7var obj = new js();8var result = obj.generateSourceMapLoader("test.js", "test.js.map", "test.js");9console.log(result);10var obj = new js();11var result = obj.generateSourceMapLoader("test.js", "test.js.map", "test.js");12console.log(result);13var obj = new js();14var result = obj.generateSourceMapLoader("test.js", "test.js.map", "test.js");15console.log(result);16var obj = new js();17var result = obj.generateSourceMapLoader("test.js", "test.js.map", "test.js");18console.log(result);19var obj = new js();20var result = obj.generateSourceMapLoader("test.js", "test.js.map", "

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