Wabt NPM | npm.io

wabt.js

wabt.js is a port of WABT to the Web, allowing you to manipulate WebAssembly modules using a JavaScript API.

Usage

$> npm install wabt

var wabt = require("wabt");

var wasm = ...; // a buffer holding the contents of a wasm file

var myModule = wabt.readWasm(wasm, { readDebugNames: true });
myModule.applyNames();

var wast = myModule.toText({ foldExprs: false, inlineExport: false });

console.log(wast);

The buildbot also publishes nightly versions once a day if there have been changes. The latest nightly can be installed through

$> npm install wabt@nightly

or you can use one of the previous versions instead if necessary.

API

parseWat(filename: string, buffer: string | Uint8Array): WasmModule Parses a wst source to a module.
readWasm(buffer: Uint8Array, options: ReadWasmOptions): WasmModule Reads a wasm binaryen to a module.
WasmModule A class representing a WebAssembly module.
- validate(): void Validates the module. Throws if not valid.
- resolveNames(): void Resolves names to indexes.
- generateNames(): void Generates textual names for function types, globals, labels etc.
- applyNames(): void Applies textual names. Throws on error.
- toText(options: ToTextOptions): string Converts the module to wat text format.
- toBinary(options: ToBinaryOptions): ToBinaryResult Converts the module to a wasm binary.
- destroy(): void Disposes the module and frees its resources.
ReadWasmOptions Options modifying the behavior of readWasm.
- readDebugNames: boolean Reads textual names from the name section.
ToTextOptions Options modifying the behavior of WasmModule#toText.
- foldExprs: boolean
- inlineExport: boolean
ToBinaryOptions Options modifying the behavior of WasmModule#toBinary.
- log: boolean
- canonicalize_lebs: boolean
- relocatable: boolean
- write_debug_names: boolean
ToBinaryResult Result object of WasmModule#toBinary.
- buffer: Uint8Array The wasm binary buffer.
- log: string Generated log output.

webassembly wasm

1.0.36-nightly.20241101

10 months ago

1.0.36-nightly.20241025

10 months ago

1.0.36-nightly.20241029

10 months ago

1.0.36-nightly.20241030

10 months ago

1.0.36-nightly.20241031

10 months ago

1.0.36-nightly.20241022

10 months ago

1.0.36-nightly.20240920

11 months ago

1.0.36-nightly.20240919

11 months ago

1.0.36-nightly.20240918

11 months ago

1.0.36-nightly.20240910

12 months ago

1.0.36-nightly.20240921

11 months ago

1.0.36-nightly.20240924

11 months ago

1.0.36-nightly.20240925

11 months ago

1.0.36-nightly.20240830

12 months ago

1.0.36-nightly.20240907

12 months ago

1.0.36-nightly.20241001

11 months ago

1.0.36-nightly.20241002

11 months ago

1.0.36-nightly.20241008

11 months ago

1.0.36-nightly.20241013

10 months ago

1.0.36-nightly.20241016

10 months ago

1.0.36-nightly.20241018

10 months ago

1.0.36-nightly.20241019

10 months ago

1.0.36-nightly.20241009

11 months ago

1.0.36-nightly.20240810

1 year ago

1.0.36-nightly.20240812

1 year ago

1.0.36-nightly.20240823

12 months ago

1.0.36

1 year ago

1.0.35-nightly.20240622

1 year ago

1.0.35-nightly.20240604

1 year ago

1.0.35-nightly.20240723

1 year ago

1.0.35-nightly.20240602

1 year ago

1.0.35-nightly.20240523

1 year ago

1.0.35-nightly.20240521

1 year ago

1.0.35-nightly.20240625

1 year ago

1.0.35-nightly.20240623

1 year ago

1.0.35-nightly.20240627

1 year ago

1.0.35-nightly.20240713

1 year ago

1.0.35-nightly.20240717

1 year ago

1.0.35-nightly.20240703

1 year ago

1.0.35-nightly.20240710

1 year ago

1.0.34-nightly.20240514

1 year ago

1.0.35

1 year ago

1.0.35-nightly.20240516

1 year ago

1.0.34-nightly.20240509

1 year ago

1.0.34-nightly.20240507

1 year ago

1.0.32-nightly.20230129

3 years ago

1.0.32-nightly.20230128

3 years ago

1.0.32-nightly.20230127

3 years ago

1.0.32-nightly.20230126

3 years ago

1.0.32-nightly.20230130

3 years ago

1.0.32-nightly.20230119

3 years ago

1.0.32-nightly.20230118

3 years ago

1.0.32-nightly.20230115

3 years ago

1.0.32-nightly.20230123

3 years ago

1.0.32-nightly.20230228

2 years ago

1.0.32-nightly.20230226

2 years ago

1.0.32-nightly.20230219

3 years ago

1.0.32-nightly.20230214

3 years ago

1.0.32-nightly.20230224

2 years ago

1.0.32-nightly.20230208

3 years ago

1.0.32-nightly.20230210

3 years ago

1.0.32-nightly.20230306

2 years ago

1.0.32-nightly.20230303

2 years ago

1.0.32-nightly.20230301

2 years ago

1.0.32-nightly.20230109

3 years ago

1.0.32-nightly.20230104

3 years ago

1.0.32-nightly.20230114

3 years ago

1.0.32-nightly.20230113

3 years ago

1.0.32-nightly.20230112

3 years ago

1.0.32-nightly.20230102

3 years ago

1.0.32-nightly.20221230

3 years ago

1.0.32

3 years ago

1.0.30-nightly.20221101

3 years ago

1.0.30-nightly.20221102

3 years ago

1.0.30-nightly.20221103

3 years ago

1.0.30-nightly.20221105

3 years ago

1.0.30-nightly.20221106

3 years ago

1.0.30-nightly.20221108

3 years ago

1.0.30-nightly.20221109

3 years ago

1.0.30-nightly.20221025

3 years ago

1.0.30-nightly.20221012

3 years ago

1.0.29-nightly.20221001

3 years ago

1.0.29-nightly.20221003

3 years ago

1.0.30

3 years ago

1.0.29-nightly.20220918

3 years ago

1.0.29-nightly.20220919

3 years ago

1.0.29-nightly.20220917

3 years ago

1.0.29-nightly.20220922

3 years ago

1.0.29-nightly.20220923

3 years ago

1.0.29-nightly.20220924

3 years ago

1.0.29-nightly.20220910

3 years ago

1.0.29-nightly.20220824

3 years ago

1.0.29-nightly.20220929

3 years ago

1.0.30-nightly.20221005

3 years ago

1.0.30-nightly.20221007

3 years ago

1.0.29-nightly.20220723

3 years ago

1.0.29-nightly.20220604

3 years ago

1.0.29-nightly.20220709

3 years ago

1.0.29-nightly.20220712

3 years ago

1.0.29-nightly.20220714

3 years ago

1.0.29-nightly.20220715

3 years ago

1.0.29-nightly.20220621

3 years ago

1.0.29-nightly.20220802

3 years ago

1.0.29-nightly.20220817

3 years ago

1.0.29-nightly.20220818

3 years ago

1.0.29-nightly.20220702

3 years ago

1.0.29-nightly.20220816

3 years ago

1.0.29-nightly.20220523

3 years ago

1.0.29-nightly.20220528

3 years ago

1.0.28-nightly.20220430

3 years ago

1.0.28-nightly.20220427

3 years ago

1.0.28-nightly.20220429

3 years ago

1.0.29

3 years ago

1.0.29-nightly.20220512

3 years ago

1.0.29-nightly.20220511

3 years ago

1.0.28-nightly.20220503

3 years ago

1.0.28-nightly.20220414

3 years ago

1.0.28-nightly.20220415

3 years ago

1.0.28-nightly.20220405

3 years ago

1.0.28-nightly.20220406

3 years ago

1.0.28-nightly.20220421

3 years ago

1.0.28-nightly.20220422

3 years ago

1.0.28-nightly.20220331

3 years ago

1.0.27-nightly.20220309

3 years ago

1.0.27-nightly.20220318

3 years ago

1.0.27-nightly.20220312

3 years ago

1.0.27-nightly.20220310

3 years ago

1.0.27-nightly.20220311

3 years ago

1.0.28-nightly.20220324

3 years ago

1.0.28-nightly.20220326

3 years ago

1.0.28-nightly.20220320

3 years ago

1.0.27-nightly.20220307

3 years ago

1.0.27-nightly.20220308

3 years ago

1.0.28

3 years ago

1.0.27-nightly.20220305

3 years ago

1.0.27-nightly.20220306

3 years ago

1.0.27-nightly.20220304

3 years ago

1.0.27-nightly.20220219

4 years ago

1.0.27-nightly.20220218

4 years ago

1.0.24-nightly.20211204

4 years ago

1.0.24-nightly.20211203

4 years ago

1.0.24-nightly.20211205

4 years ago

1.0.24-nightly.20211208

4 years ago

1.0.24-nightly.20211207

4 years ago

1.0.27-nightly.20220226

3 years ago

1.0.27-nightly.20220224

3 years ago

1.0.27-nightly.20220225

3 years ago

1.0.27-nightly.20220223

3 years ago

1.0.25-nightly.20211224

4 years ago

1.0.25-nightly.20211223

4 years ago

1.0.25-nightly.20211222

4 years ago

1.0.25-nightly.20211221

4 years ago

1.0.25-nightly.20211218

4 years ago

1.0.25-nightly.20211216

4 years ago

1.0.26-nightly.20220205

4 years ago

1.0.26-nightly.20220203

4 years ago

1.0.26-nightly.20220202

4 years ago

1.0.26-nightly.20220201

4 years ago

1.0.26-nightly.20220216

4 years ago

1.0.26-nightly.20220215

4 years ago

1.0.26-nightly.20220213

4 years ago

1.0.26-nightly.20220212

4 years ago

1.0.26-nightly.20220211

4 years ago

1.0.25-nightly.20220111

4 years ago

1.0.25-nightly.20220109

4 years ago

1.0.24-nightly.20211211

4 years ago

1.0.24-nightly.20211210

4 years ago

1.0.26-nightly.20220122

4 years ago

1.0.24-nightly.20211214

4 years ago

1.0.25-nightly.20220108

4 years ago

1.0.24-nightly.20211209

4 years ago

1.0.26

4 years ago

1.0.25

4 years ago

1.0.27

4 years ago

1.0.26-nightly.20220115

4 years ago

1.0.24-nightly.20211201

4 years ago

1.0.24-nightly.20211109

4 years ago

1.0.24-nightly.20211118

4 years ago

1.0.24-nightly.20211117

4 years ago

1.0.24-nightly.20211120

4 years ago

1.0.24-nightly.20211123

4 years ago

1.0.24-nightly.20211027

4 years ago

1.0.24-nightly.20211030

4 years ago

1.0.24-nightly.20211102

4 years ago

1.0.24-nightly.20211105

4 years ago

1.0.24-nightly.20211107

4 years ago

1.0.24-nightly.20211013

4 years ago

1.0.24-nightly.20211012

4 years ago

1.0.24-nightly.20211015

4 years ago

1.0.24-nightly.20211014

4 years ago

1.0.24-nightly.20211017

4 years ago

1.0.24-nightly.20211019

4 years ago

1.0.24-nightly.20211020

4 years ago

1.0.24-nightly.20211021

4 years ago

1.0.24-nightly.20211002

4 years ago

1.0.24-nightly.20210928

4 years ago

1.0.24-nightly.20210921

4 years ago

1.0.24-nightly.20210916

4 years ago

1.0.24-nightly.20210911

4 years ago

1.0.24-nightly.20210910

4 years ago

1.0.24-nightly.20210830

4 years ago

1.0.24-nightly.20210829

4 years ago

1.0.24-nightly.20210824

4 years ago

1.0.24-nightly.20210814

4 years ago

1.0.24

4 years ago

1.0.23-nightly.20210807

4 years ago

1.0.23-nightly.20210806

4 years ago

1.0.23-nightly.20210727

4 years ago

1.0.23-nightly.20210726

4 years ago

1.0.23-nightly.20210715

4 years ago

1.0.23-nightly.20210701

4 years ago

1.0.23-nightly.20210630

4 years ago

1.0.23-nightly.20210626

4 years ago

1.0.23-nightly.20210623

4 years ago

1.0.23-nightly.20210618

4 years ago

1.0.23-nightly.20210611

4 years ago

1.0.23-nightly.20210529

4 years ago

1.0.23-nightly.20210528

4 years ago

1.0.23-nightly.20210519

4 years ago

1.0.23-nightly.20210507

4 years ago

1.0.23-nightly.20210505

4 years ago

1.0.23-nightly.20210514

4 years ago

1.0.23-nightly.20210425

4 years ago

1.0.23-nightly.20210423

4 years ago

1.0.23-nightly.20210526

4 years ago

1.0.23-nightly.20210427

4 years ago

1.0.23-nightly.20210412

4 years ago

1.0.23-nightly.20210409

4 years ago

1.0.23-nightly.20210408

4 years ago

1.0.23-nightly.20210406

4 years ago

1.0.23-nightly.20210327

4 years ago

1.0.23

4 years ago

1.0.21-nightly.20210306

4 years ago

1.0.21

4 years ago

1.0.20-nightly.20201112

5 years ago

1.0.20

5 years ago

1.0.19-nightly.20201104

5 years ago

1.0.19-nightly.20201027

5 years ago

1.0.19-nightly.20201025

5 years ago

1.0.19-nightly.20201024

5 years ago

1.0.19-nightly.20201022

5 years ago

1.0.19-nightly.20201014

5 years ago

1.0.19-nightly.20201003

5 years ago

1.0.19-nightly.20201002

5 years ago

1.0.19-nightly.20200929

5 years ago

1.0.19-nightly.20200919

5 years ago

1.0.19-nightly.20200918

5 years ago

1.0.19-nightly.20200917

5 years ago

1.0.19-nightly.20200915

5 years ago

1.0.19-nightly.20200912

5 years ago

1.0.19-nightly.20200911

5 years ago

1.0.19-nightly.20200909

5 years ago

1.0.19-nightly.20200903

5 years ago

1.0.19-nightly.20200901

5 years ago

1.0.19-nightly.20200823

5 years ago

1.0.19-nightly.20200822

5 years ago

1.0.19-nightly.20200821

5 years ago

1.0.19-nightly.20200820

5 years ago

1.0.19-nightly.20200819

5 years ago

1.0.19-nightly.20200812

5 years ago

1.0.19-nightly.20200811

5 years ago

1.0.19-nightly.20200808

5 years ago

1.0.19-nightly.20200804

5 years ago

1.0.19-nightly.20200801

5 years ago

1.0.19-nightly.20200731

5 years ago

1.0.19-nightly.20200726

5 years ago

1.0.19-nightly.20200725

5 years ago

1.0.19-nightly.20200724

5 years ago

1.0.19-nightly.20200723

5 years ago

1.0.19

5 years ago

1.0.18-nightly.20200721

5 years ago

1.0.18-nightly.20200719

5 years ago

1.0.18

5 years ago

1.0.17-nightly.20200716

5 years ago

1.0.17-nightly.20200714

5 years ago

1.0.17-nightly.20200708

5 years ago

1.0.17-nightly.20200623

5 years ago

1.0.17-nightly.20200621

5 years ago

1.0.17

5 years ago

1.0.16-nightly.20200603

5 years ago

1.0.16-nightly.20200601

5 years ago

1.0.16-nightly.20200531

5 years ago

1.0.16-nightly.20200530

5 years ago

1.0.16-nightly.20200529

5 years ago

1.0.16-nightly.20200528

5 years ago

1.0.16-nightly.20200523

5 years ago

1.0.16-nightly.20200521

5 years ago

1.0.16

5 years ago

1.0.15-nightly.20200519

5 years ago

1.0.15-nightly.20200518

5 years ago

1.0.15-nightly.20200516

5 years ago

1.0.15-nightly.20200514

5 years ago

1.0.15-nightly.20200512

5 years ago

1.0.15

5 years ago

1.0.13-nightly.20200430

5 years ago

1.0.13-nightly.20200429

5 years ago

1.0.13-nightly.20200425

5 years ago

1.0.13-nightly.20200424

5 years ago

1.0.13-nightly.20200422

5 years ago

1.0.13-nightly.20200419

5 years ago

1.0.13-nightly.20200418

5 years ago

1.0.13-nightly.20200416

5 years ago

1.0.13-nightly.20200415

5 years ago

1.0.13-nightly.20200410

5 years ago

1.0.13-nightly.20200409

5 years ago

1.0.13-nightly.20200408

5 years ago

1.0.13-nightly.20200407

5 years ago

1.0.13-nightly.20200404

5 years ago

1.0.13-nightly.20200401

5 years ago

1.0.13-nightly.20200330

5 years ago

1.0.13-nightly.20200331

5 years ago

1.0.13-nightly.20200329

5 years ago

1.0.13-nightly.20200328

5 years ago

1.0.13-nightly.20200327

5 years ago

1.0.13-nightly.20200326

5 years ago

1.0.13-nightly.20200324

5 years ago

1.0.13-nightly.20200323

5 years ago

1.0.13-nightly.20200321

5 years ago

1.0.13-nightly.20200319

5 years ago

1.0.13-nightly.20200317

5 years ago

1.0.13-nightly.20200315

5 years ago

1.0.13

5 years ago

1.0.12-nightly.20200116

6 years ago

1.0.12-nightly.20200115

6 years ago

1.0.12-nightly.20200114

6 years ago

1.0.12-nightly.20200112

6 years ago

1.0.12-nightly.20200111

6 years ago

1.0.12-nightly.20200110

6 years ago

1.0.12-nightly.20200109

6 years ago

1.0.12-nightly.20200108

6 years ago

1.0.12-nightly.20200107

6 years ago

1.0.12-nightly.20200105

6 years ago

1.0.12-nightly.20200104

6 years ago

1.0.12-nightly.20200102

6 years ago

1.0.12-nightly.20200101

6 years ago

1.0.12-nightly.20191229

6 years ago

1.0.12-nightly.20191227

6 years ago

1.0.12-nightly.20191224

6 years ago

1.0.12-nightly.20191220

6 years ago

1.0.12-nightly.20191215

6 years ago

1.0.12-nightly.20191213

6 years ago

1.0.12-nightly.20191212

6 years ago

1.0.12-nightly.20191211

6 years ago

1.0.12-nightly.20191210

6 years ago

1.0.12-nightly.20191205

6 years ago

1.0.12-nightly.20191203

6 years ago

1.0.12-nightly.20191127

6 years ago

1.0.12-nightly.20191123

6 years ago

1.0.12-nightly.20191122

6 years ago

1.0.12-nightly.20191121

6 years ago

1.0.12-nightly.20191120

6 years ago

1.0.12-nightly.20191119

6 years ago

1.0.12-nightly.20191117

6 years ago

1.0.12-nightly.20191116

6 years ago

1.0.12-nightly.20191112

6 years ago

1.0.12-nightly.20191109

6 years ago

1.0.12-nightly.20191108

6 years ago

1.0.12-nightly.20191107

6 years ago

1.0.12-nightly.20191029

6 years ago

1.0.12-nightly.20191025

6 years ago

1.0.12-nightly.20191024

6 years ago

1.0.12-nightly.20191023

6 years ago

1.0.12-nightly.20191022

6 years ago

1.0.12-nightly.20191020

6 years ago

1.0.12-nightly.20191018

6 years ago

1.0.12-nightly.20191015

6 years ago

1.0.12-nightly.20191011

6 years ago

1.0.12-nightly.20191010

6 years ago

1.0.12-nightly.20191009

6 years ago

1.0.12-nightly.20191001

6 years ago

1.0.12-nightly.20190926

6 years ago

1.0.12

6 years ago

1.0.11-nightly.20190924

6 years ago

1.0.11-nightly.20190920

6 years ago

1.0.11-nightly.20190918

6 years ago

1.0.11-nightly.20190913

6 years ago

1.0.11-nightly.20190911

6 years ago

1.0.11-nightly.20190910

6 years ago

1.0.11-nightly.20190909

6 years ago

1.0.11-nightly.20190907

6 years ago

1.0.11-nightly.20190625

6 years ago

1.0.11-nightly.20190621

6 years ago

1.0.11-nightly.20190619

6 years ago

1.0.11-nightly.20190614

6 years ago

1.0.11-nightly.20190612

6 years ago

1.0.11-nightly.20190611

6 years ago

1.0.11-nightly.20190609

6 years ago

1.0.11-nightly.20190608

6 years ago

1.0.11-nightly.20190606

6 years ago

1.0.11-nightly.20190604

6 years ago

1.0.11-nightly.20190602

6 years ago

1.0.11

6 years ago

1.0.10

6 years ago

1.0.8-nightly.20190306

6 years ago

1.0.8-nightly.20190227

6 years ago

1.0.8-nightly.20190225

6 years ago

1.0.8-nightly.20190223

6 years ago

1.0.8-nightly.20190221

7 years ago

1.0.8-nightly.20190220

7 years ago

1.0.8-nightly.20190205

7 years ago

1.0.8-nightly.20190203

7 years ago

1.0.8-nightly.20190201

7 years ago

1.0.8-nightly.20190130

7 years ago

1.0.8-nightly.20190129

7 years ago

1.0.8-nightly.20190125

7 years ago

1.0.8-nightly.20190124

7 years ago

1.0.8-nightly.20190122

7 years ago

1.0.8-nightly.20190120

7 years ago

1.0.8-nightly.20190119

7 years ago

1.0.8

7 years ago

1.0.6-nightly.20190115

7 years ago

1.0.6-nightly.20190113

7 years ago

1.0.6-nightly.20190112

7 years ago

1.0.6-nightly.20190110

7 years ago

1.0.6-nightly.20190108

7 years ago

1.0.6-nightly.20181222

7 years ago

1.0.6-nightly.20181220

7 years ago

1.0.6-nightly.20181218

7 years ago

1.0.6-nightly.20181215

7 years ago

1.0.6-nightly.20181213

7 years ago

1.0.6-nightly.20181206

7 years ago

1.0.6-nightly.20181201

7 years ago

1.0.6-nightly.20181130

7 years ago

1.0.6-nightly.20181129

7 years ago

1.0.6-nightly.20181122

7 years ago

1.0.6-nightly.20181120

7 years ago

1.0.6-nightly.20181117

7 years ago

1.0.6-nightly.20181115

7 years ago

1.0.6-nightly.20181114

7 years ago

1.0.6-nightly.20181108

7 years ago

1.0.6-nightly.20181102

7 years ago

1.0.6-nightly.20181019

7 years ago

1.0.6-nightly.20181018

7 years ago

1.0.6-nightly.20181016

7 years ago

1.0.6-nightly.20181013

7 years ago

1.0.6

7 years ago

1.0.5-nightly.20181006

7 years ago

1.0.5-nightly.20181004

7 years ago

1.0.5-nightly.20181003

7 years ago

1.0.5-nightly.20180927

7 years ago

1.0.5-nightly.20180922

7 years ago

1.0.5-nightly.20180920

7 years ago

1.0.5

7 years ago

1.0.0-nightly.20180421

7 years ago

1.0.0-nightly.20180411

7 years ago

1.0.0-nightly.20180408

7 years ago

1.0.0-nightly.20180402

7 years ago

1.0.0-nightly.20180328

7 years ago

1.0.0-nightly.20180324

7 years ago

1.0.0-nightly.20180321

7 years ago

1.0.0-nightly.20180317

7 years ago

1.0.0-nightly.20180309

7 years ago

1.0.0-nightly.20180305

7 years ago

1.0.0-nightly.20180303

7 years ago

1.0.0-nightly.20180228

7 years ago

1.0.0-nightly.20180225

7 years ago

1.0.0-nightly.20180222

7 years ago

1.0.0-nightly.20180221

7 years ago

1.0.0-nightly.20180219

8 years ago

1.0.0-nightly.20180208

8 years ago

1.0.0-nightly.20180207

8 years ago

1.0.0-nightly.20180203

8 years ago

1.0.0-nightly.20180130

8 years ago

1.0.0

8 years ago

0.0.13-nightly.20170628

8 years ago

0.0.13-nightly.20170624

8 years ago

0.0.13

8 years ago