Change Log
- Update supported Node.js versions up to
node@22. Fixes javascript-obfuscator#1100 - Update
class-validatorversion. Fixes javascript-obfuscator#1247 - Fixed CI
- Add target
service-worker
- Add support for
node@18 - Update dependencies
- Update
class-validatordependency javascript-obfuscator#1146
- Breaking change:
debugProtectionIntervaloption now accepts value in milliseconds instead ofbooleanvalue. Fixed javascript-obfuscator#1031
- Fixed cases when dead code is added to the inner code of
evalexpressions. Fixed javascript-obfuscator#1053
- Improved integration between
renamePropertiesandcontrolFlowFlatteningoptions. Fixed javascript-obfuscator#1053
- Fixed missing transformation of string array calls in some cases
- Fixed generation of reserved identifier names like
MaporSetformangledandmangled-shuffledidentifier names generators
- Updated copyright
- New options:
stringArrayCallsTransformandstringArrayCallsTransformThreshold - Fixed javascript-obfuscator#1046
- Added support of
es2022features: class static block
- Dependencies update
- Fixed performance for Apple M1 chip
- Breaking change:
ignoreRequireImportsoption renamed toignoreImports - Breaking change:
rotateStringArrayoption renamed tostringArrayRotate - Breaking change:
shuffleStringArrayoption renamed tostringArrayShuffle ignoreImportsnow ignoresdynamicimports in addition torequireimports
- Updated
@javascript-obfuscator/escodegenwith fixed parenthesis ofdefault exportIIFE
- Fixed very rare cases when
rotateStringArraycouldn't rotate array properly - Improved
selfDefendingoption - Installed
npmpackage now hastypesdirectory and doesn't havesrcdirectory - Fixed javascript-obfuscator#959
- Updated
@javascript-obfuscator/escodegenwith fixed generation of private property names
- Added support of
es2022features: private identifiers and class properties - Dropped support for
node@15 - Increased minimum supported
nodeversions:^12.22.0 || ^14.17.0 || >=16.0.0
- New option:
sourceMapSourcesModeallows to controlsourcesandsourcesContentfields of the source map inputFileNameoption now required when using NodeJS API andsourceMapSourcesModeoption hassourcesvalue`- Fixed some cases with wrong source map file name generation when
sourceMapFileNameoption is set
stringArrayWrappersType: 'function'now generates different indexes between each wrapper inside the same lexical scopestringArrayWrappersType: 'function'now generates different parameters order between each wrapper inside the same lexical scopestringArrayWrappersType: 'function'now appendsFunctionDeclarationfunctions instead ofFunctionExpressionfunctions. This allows to append these wrappers at random positions inside each scoperenamePropertiesoption now won't generate duplicated property names in some cases
- To increase performance and prevent possible runtime errors
transformObjectKeysoption now completely ignores objects withCallExpressionorNewExpressionnodes. Fixed javascript-obfuscator#948
- Improved
stringArraycalls wrapper decode code
- Improved
stringArraycalls wrapper code
- Slightly improved integration between
deadCodeInjectionandstringArrayWrappersChainedCallsoptions
- Fixed invalid behaviour of
transformObjectKeysoption when object values containsthisreferences. Fixed javascript-obfuscator#937
- Hotfix:
domainDest=>domainLockRedirectUrloption rename
- Added
domainDestoption that option allows the browser to be redirected to a passed domain if the source code isn't run on the domains or URL specified bydomainLock. Thank you https://github.com/erikdubbelboer! ObfuscationResultobject now containsgetOptionsmethod to get options that were used during obfuscation
- Added
identifierNamesCacheoption for reading and writing identifier names cache. SeeREADME.md. - CLI: Added
--identifier-names-cache-pathoption for reading and writing identifier names cache. SeeREADME.md.
- Fixed invalid code generation for start/middle rest arguments when
controlFlowFlattenigoption is enabled. Fixed javascript-obfuscator#920 - Internal: Added support of
node@16and dropped support ofnode@10. This should not affect obfuscated code
stringArraycalls wrappers now inserted asFunctionDeclarationnodes at random indexes
- CLI: now it's possible to specify the path to the input file after specifying the obfuscator options. Fixed javascript-obfuscator#904
- Added option
renamePropertiesModeto switch between newsafeand oldunsafemodes ofrenamePropertiesoption. Fixed javascript-obfuscator#878 renamePropertiesoption now works insafeway by default
- Fixed CVE-2019-18413. Fixed javascript-obfuscator#880
- Added support of
top-level await. Fixed javascript-obfuscator#884
- Fixed invalid code generation for rest arguments when
controlFlowFlatteningoption is enabled. Fixed javascript-obfuscator#887
- Fixed invalid behaviour of
numbersToExpressionsoption for float numbers. Fixed javascript-obfuscator#882
- Fixed
simplifyoption regression after2.10.2. Fixed javascript-obfuscator#864
- Fixed behavior of
simplifyoptions when a node with a single-statementbodyis inside simplifiedIfStatementnode. Fixed javascript-obfuscator#860
- Removed padding characters from all base64 encoded strings. Removed RegExp that trims padding characters from
base64encoded strings fromatobcode helper to prevent mutation ofRegExp.$1value during calls to thestringArray. Fixed javascript-obfuscator#829
- Improved
rotateStringArrayoption
- Preventing move of
"use strict";directive during obfuscation
- Fixed runtime errors in large obfuscated code when both
rc4andbase64encodings are enabled - Some internal refactoring related to node append events
- Fixed missing prefix of root identifiers added by
stringArrayWrappersCountoption whenidentifiersPrefixoption is set
- CLI: Fixed wrong name of obfuscated files when input directory path is the
.symbol. javascript-obfuscator#816
- Ignore object expressions as body of arrow function expression when
transformObjectKeysoption is enabled. Fixed javascript-obfuscator#813
- Fixed wrong
stringArrayWrappersParametersMaxCountCLI option name
- New option:
stringArrayIndexesTypeaccepts an array of types of string array call indexes - Changed default type of all string array call indexes from
hexadecimal-numeric-stringtohexadecimal-number - New option:
stringArrayIndexShiftenables additional index shift for all string array calls - New option:
stringArrayWrappersParametersMaxCountallows to control the maximum number of string array wrappers parameters stringArrayWrappersType: 'function'option value moved fromhigh-obfuscationtomedium-obfuscationoptions preset
- Fixed incorrect rename of the identifiers of the added helpers in some rare cases. Fixed javascript-obfuscator#804
- New option
ignoreRequireImportsprevents obfuscation ofrequireimports. Fixed javascript-obfuscator#801
- Updated
@javascript-obfuscator/escodegento2.1.1
- Switched form
escodegento@javascript-obfuscator/escodegen - Full support of
nullish-coalescing. Fixed javascript-obfuscator#604 - Support for
exportedfield ofExportAllDeclarationnode. Fixed javascript-obfuscator#710
- Added ignoring of all object members previous to
SpreadElementwhentransformObjectKeysoption is enabled. Fixed javascript-obfuscator#797
- Added
ExportSpecifierTransformer. Fixed javascript-obfuscator#791
- Fixed installation in
PowerShell. Fixed javascript-obfuscator#783 - Tested under
Node.js@15
- Fixed missing rename of object pattern properties in some cases. Fixed javascript-obfuscator#781
- Migration to
webpack@5 - Optimized performance of
ExpressionStatementsMergeTransformerwhensimplifyoption is enabled. Fixed javascript-obfuscator#777 - Fixed broken
identifierNamesGenerator: 'mangled-shuffled'after2.2.0. Fixed javascript-obfuscator#778
- Improved hierarchy of generated directories when
--outputis a directory path - Fixed wrong path generation for obfuscated files for
win32environment. Fixed javascript-obfuscator#576 - Fixed wrong path generation under for source map for
win32environment. Fixed javascript-obfuscator#760 javascript-obfuscatornow can be built underwin32environment
- Fixed
URI-malformedwhensplitStringsandstringArrayEncodingoptions are enabled. javascript-obfuscator#530
- Small release with some README.md improvements that allow to use it on obfuscator.io
- New option:
forceTransformStringsallows force transform strings even if bystringArrayThreshold(or possible other thresholds in the future) they shouldn't be transformed. Implemented javascript-obfuscator#657
- Fixed a rare bug with
identifierNamesGenerator: 'mangled'option that causes wrong identifier names generation
- New option:
stringArrayWrappersTypeallows to select a type of the wrappers that are appending by thestringArrayWrappersCountoption - Add force convert of unicode control characters to the unicode escape sequence. Fixed javascript-obfuscator#747
- New option (enabled by default):
stringArrayWrappersCountsets the count of wrappers for thestring arrayinside each root or function scope - New option (enabled by default):
stringArrayWrappersChainedCallsenables the chained calls betweenstring arraywrappers
- New API:
getOptionsByPresetallows to get options for the passed options preset name
- Breaking change:
stringArrayEncodingoption now accepts an array of encodings. Each string will be randomly encoded with passed encoding
- Fixed regression bug with combination of
splitStringsandrenamePropertiesoption. javascript-obfuscator#729
- New option:
optionsPresetallows to set options preset
- Improved rename of
deadCodeInjectiondead code identifiers. Fixed javascript-obfuscator#708 - Reverted
TaggedTemplateLiteralobfuscation. javascript-obfuscator#716
- Fixed obfuscation of literals of
ExportNamedDeclarationandExportAllDeclarationnodes
- Feature: Optional chaining support!
- Added
TaggedTemplateLiteralobfuscation. javascript-obfuscator#696 - Improved
disableConsoleOutputtemplate. javascript-obfuscator#691
- Improved obfuscation of destructured variables. javascript-obfuscator#688
- Fixed runtime error
Uncaught SyntaxError: yield is a reserved identifierwhendeadCodeInjectionis enabled
domainLockoption patterns with leading dot character (.example.com) now cover root domains (example.com) in addition to all sub-domains (sub.example.com). javascript-obfuscator#640
simplifyoption now affects all block statements. Improved variable declarations merging.
- New option:
numbersToExpressionsenables numbers conversion to expressions
- Prevented mutation of the name sequences of
mangledidentifier name generators
- Fixed runtime error when
IfStatementcontains only singleletorconstvariable declaration whensimlifyoption enabled. javascript-obfuscator#661 - Fixed wrong
source-map: 'inline'encoding after1.3.0
- New
mangled-shuffledidentifier names generator based onmangledidentifier names generator
- New option:
simplifyenables additional code obfuscation through simplification
- Improvements of
stringArrayEncoding:base64andrc4 - CLI: added config file extension validation (it still supports
.jsand.jsonextensions) - Fixed javascript-obfuscator#499
- Fixed performance regression of
Initializingstage after1.2.0
- Support of old browsers when
selfDefendingis enabled. javascript-obfuscator#615
- Conditional comments will be removed from the code after obfuscation. javascript-obfuscator#641
- New option:
renamePropertiesenables renaming of property names
- Fixed .d.ts typings. javascript-obfuscator#623
- Looks like obfuscator is ready for the first stable release
- Fixed error during code generation for
ObjectPatternwith singleRestElement. javascript-obfuscator#607
- Added correct
self-defendingcode fortarget: 'browser-no-eval'. javascript-obfuscator#610
- Removed memory leak with
identifierNamesGenerator: 'mangled'
- Fixed change of kinds of variables for dead code with
deadCodeInjectionoption
- Removed
acorn-import-metapackage
- Added BigInt support. javascript-obfuscator#588
- Fixed javascript-obfuscator#554
- Fixed identifiers prefix generation for
obfuscateMultiplemethod
- Dependencies update, fixed https://www.npmjs.com/advisories/1488
- Feature: new method
obfuscateMultipleto obfuscation of multiple source codes
- Internal: new code transformers mechanism
- Supported obfuscation of files with hashbang operator, javascript-obfuscator#471
- Additional fixes of javascript-obfuscator#550
- Improved
mangledidentifier names generator logic - Improved
selfDefendinghelper logic - Fixed a bunch of conflicts between generated identifier names. Fixed javascript-obfuscator#550. Fixed javascript-obfuscator#549
- Prevented transformation of object keys in sequence expression that has
supercall - Support of output directory paths with a dot symbol
- Changed
--outputlogic. Now--outputvalue can describe if it's a file or a directory path. Check README.md for more info
- Fixed support of exponentiation operator. Fixed javascript-obfuscator#534
- Added file path to the error message during directory obfuscation. Fixed javascript-obfuscator#513
- Fixed rc4 encoded value collision: javascript-obfuscator#538
- Reverted validation errors under
nodetarget forsourceMap*options
- Internal refactoring: completely new mechanism to rename variable names
- Dynamic import and
import.metasupport. Fixed javascript-obfuscator#505 - Now usage of some browser-related options with
target: 'node'will cause a validation error - Increased
identifierNamesGenerator: 'mangledspeed - CLI: a file path will be displayed on obfuscation error. Fixed javascript-obfuscator#513
- Fixed many
transformObjectKeysruntime errors - Fixed
Maximum call stack size exceedederror on large strings whensplitStringoption is enabled - Fixed javascript-obfuscator#516
- Fixed javascript-obfuscator#512
- Fixed javascript-obfuscator#496
- Internal: switched from
awesome-typescript-loaderonts-loader
- Fixed javascript-obfuscator#475
- Fixed javascript-obfuscator#326
- New option:
shuffleStringArrayrandomly shuffles string array items - Fixed javascript-obfuscator#494
- Internal change: switched AST parser from
espreeonacorn - Internal refactoring: refactoring of string array storage and related things
- Fixed
TypeError: Assignment to constant variablewhen auto-detection of kind of variables is insertedconstvariables forcontrolFlowStoragenodes
- Breaking: auto-detection of kind of variables of inserted nodes, based on most prevailing kind of variables of source code
- Fixed javascript-obfuscator#486
- Fixed conditional comments in some rare cases
- Improved
transformObjectKeystransformation to cover more cases - Fixed javascript-obfuscator#406
- Fixed javascript-obfuscator#387
- Fixed javascript-obfuscator#333
- Fixed javascript-obfuscator#328
- Fixed typings. Now string values correctly assignable to enum-like options
- Fixed
for-await-ofstatement: javascript-obfuscator#419
- Fixed javascript-obfuscator#442
- Fixed javascript-obfuscator#468
- Added funding button
- Internal dependencies update, Happy New Year 2020!
- Fixed identifier names generations for
mangledanddictionaryidentifier names generators - Fixed combination of
identifierNamesGenerator: dictionaryanddebugProtectionoptions seedoption now acceptsstringandnumbervalues
- Breaking: dropped support of Node 8 because of end of maintenance support
- New option value:
identifierNamesGeneratornow allows to set newdictionaryidentifier names generator - New option:
identifiersDictionarysets identifiers dictionary foridentifierNamesGenerator: dictionaryoption
Thanks to our contributors!
- Fixed
reservedNamesoption
Thanks to our contributors!
- The
splitStringsoption now correctly works withtransformObjectKeysoption - Internal
TransformersRunnerrework to support topological sort of node transformers
- The
splitStringsoption now correctly splits strings inside objects
- The
splitStringsoption now affects template literal strings
- New option:
splitStringssplits literal strings into chunks with length ofsplitStringsChunkLengthoption value - New option:
splitStringsChunkLengthsets chunk length ofsplitStringsoption
Thanks to our contributors!
- Breaking: require Node.js 8 after dependencies update
- Fixed javascript-obfuscator#321
Thanks to our contributors!
Thanks to our contributors!
Thanks to our contributors!
- Fixed javascript-obfuscator#320
- Fixed javascript-obfuscator#319
- New option:
reservedStringsdisables transformation of string literals, which being matched by passed RegExp patterns - Fixed javascript-obfuscator#313
- Fixed javascript-obfuscator#309
- Fixed javascript-obfuscator#307
- Fixed javascript-obfuscator#303
- Fixed javascript-obfuscator#302
- Fixed javascript-obfuscator#293
- Fixed javascript-obfuscator#289
- Fixed javascript-obfuscator#288
- Browser version: Added browser version dist
- New Node API option:
inputFileNameallows to set name of the input file with source code. This name will used internally, for example, for source map generation. - #274
domainLocknow will work in SVG.
Fixed javascript-obfuscator#273 - Fixed javascript-obfuscator#271
- Fixed javascript-obfuscator#264
- Fixed javascript-obfuscator#260
- Fixed javascript-obfuscator#252
- Fixed javascript-obfuscator#247
- Correct obfuscation of object rest and spread properties
- Fixed javascript-obfuscator#243
- Internal change: switched AST parser from
esprimaonespree - Breaking change: dropped
node@4andnode@5support. - Breaking change: renamed
extensionvalue oftargetoption onbrowser-no-eval. - Breaking change: disabled generation of identifiers, which being matched by
reservedNameoption. Fixed javascript-obfuscator#216 - New CLI option:
excludeallows to exclude specific files or directories from obfuscation. - Correct obfuscation of
importandexportdeclarations. - Fixed javascript-obfuscator#231
- Fixed javascript-obfuscator#217
- Fixed javascript-obfuscator#210
- Internal: refactoring of many things.
- Fixed javascript-obfuscator#195
- Added code preview to
esprimaerror messages.
- Temporary fixed javascript-obfuscator#181
- New option:
identifiersPrefixsets prefix for all global identifiers. - New option:
transformObjectKeysenables object keys transformation and obfuscation. - New feature:
evalexpressions obfuscation. - Breaking change: Now CLI obfuscating directory recursively. Fixed javascript-obfuscator#157
- Fixed runtime errors when
deadCodeInjectionis enabled andidentifierNamesGeneratoris set tomangled. - Fixed javascript-obfuscator#171
- Fixed javascript-obfuscator#166
- Fixed javascript-obfuscator#156
- Fixed javascript-obfuscator#159
- Breaking change:
mangleoption was removed. - New option:
identifierNamesGeneratorallows to set identifier names generator (hexadecimalormangled). - Breaking change: all CLI options were renamed to
kebab-caseformat (--disableConsoleOutout->--disable-console-output). - Implemented custom
mangleoption algorithm withoutesmangle; fixed javascript-obfuscator#110 - Comments with
@licenseand@preservewords won't be removed from obfuscated code. - Fixed javascript-obfuscator#147
- Fixed javascript-obfuscator#149
- Fixed javascript-obfuscator#129
- Fixed javascript-obfuscator#125 (dead code injection and await expression)
- Fixed javascript-obfuscator#123
- Fixed javascript-obfuscator#121
- Fixed javascript-obfuscator#119
- New option:
targetallows to set target environment for obfuscated code. - Added ability to disable and enable obfuscation for specific parts of the code by adding conditional comments.
- Added obfuscation of
es2015class names. - CLI: added directory obfuscation.
- Fixed javascript-obfuscator#98
- Fixed javascript-obfuscator#94
- New option:
logenables logging of the information to the console. - New option:
renameGlobalsallows to enable obfuscation of global variable and function names with declaration.
- Fixed javascript-obfuscator#78
- Fixed javascript-obfuscator#76
- New option:
deadCodeInjection. With this option random blocks of dead code will add to the obfuscated code. - New option:
deadCodeInjectionThresholdallows to set percentage of nodes that will affected bydeadCodeInjection. - New option:
mangleenables mangling of variable names. - New CLI option:
--configallows to set config file with obfuscator options. - Breaking change:
disableConsoleOutputoption now disabled by default. - Breaking change:
escapeUnicodeSequenceoption now disabled by default. controlFlowFlatteningnow affects string literal nodes.- Increased runtime performance with
rc4stringArrayEncoding. - Added support for async functions
- Fixed javascript-obfuscator#71
- Fixed javascript-obfuscator#65
- Fixed javascript-obfuscator#60
- Fixed javascript-obfuscator#59
- Fixed javascript-obfuscator#54
- Fixed javascript-obfuscator#57
- Fixed javascript-obfuscator#58
- Fixed javascript-obfuscator#58
- Switched from
escodegentoescodegen-wallaby, fixed javascript-obfuscator#50
- Removed coverage dir from npm package
- Fixed javascript-obfuscator#37
- Breaking change: dropped
node@0.10andnode@0.12support. - New option:
controlFlowFlatteningallows to enable/disable Control Flow flattening. Control flow flattening is a structure transformation of the source code that hinders program comprehension. - New option:
controlFlowFlatteningThresholdallows to set percentage of nodes that will affected bycontrolFlowFlattening. - Significantly increased obfuscation performance.
- Huge internal refactoring.
- Better
es2015support: correct obfuscation ofTemplateLiteral,ArrayPattern,AssignmentPatternnodes. - Switched from
npmtoyarninternally. - Various bug fixes.
- Increased performance
- Fixed very rare
Cannot read property 'type' of undefinederror, whenRandomGeneratorUtils.getMathRandom()returned incorrect value1.
- Increased performance
- Breaking change: dropped
node@0.10andnode@0.12support. - Switched from
npmtoyarninternally.
- Transformers refactoring
- New option:
controlFlowFlatteningallows to enable/disable Control Flow flattening. Control flow flattening is a structure transformation of the source code that hinders program comprehension. - New option:
controlFlowFlatteningThresholdallows to set percentage of nodes that will affected bycontrolFlowFlattening. - Better
es2015support: correct obfuscation ofTemplateLiteral,ArrayPattern,AssignmentPatternnodes. - Obfuscation performance boost.
- Huge internal refactoring.
- Various bug fixes.
- Additional fixes for javascript-obfuscator#29
- Fixed javascript-obfuscator#29
selfDefendingoption now disabled by default.
- New option
seedsets seed for random generator. This is useful for creating repeatable results. - IE8 runtime error fix.
disableConsoleOutputoption now replacesconsole.xxxfunctions on empty function instead of infinity loop.
- Breaking options change:
unicodeArrayoption has been renamed tostringArray. - Breaking options change:
unicodeArrayThresholdoption has been renamed tostringArrayThreshold. - Breaking options change:
encodeUnicodeArrayoption has been renamed tostringArrayEncodingand now accepts following values:true|false|'base64'|'rc4'. - Breaking change: option
wrapUnicodeArrayCallswas removed and now all calls tostringArrayare always wrapped by special wrapper function. - New option
unicodeEscapeSequenceallows to enable/disable strings conversion to unicode escape sequence. - New option
domainLocklocks the obfuscated source code so it only runs on specific domains and/or sub-domains. - New option
sourceMapBaseUrlsets base url to the source map import url whensourceMapMode: 'separate'. - Custom nodes like
selfDefendingNodeorconsoleOutputNodenow inserted into deepest stack trace function call. - Fixed obfuscation of global variables and function names in some cases.
- Fixed wrong obfuscation of labels.
- Rewrite of many custom nodes.
- CLI missing polyfill fix #17
- IE error fix #14
- Obfuscator now returns an empty string instead of obfuscated code if source code is empty
- Fix of incorrect
Utils.decToHexmethod
- Breaking API change: now
obfuscate(sourceCode, options)returnsObfuscationResultobject insteadstring.ObfuscationResultobject contains two public methods:getObfuscatedCode()andgetSourceMap(). - CLI. Now any code can be obfuscated through CLI
javascript-obfuscatorcommand. SeeREADME.mdfor available options. - New option
sourceMapenables source map generation for obfuscated code. - New option
sourceMapModespecifies source map generation mode.