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Add obfuscateBuiltins and obfuscateApiCalls options #1385

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05c14f4
Add obfuscateBuiltins and obfuscateApiCalls options
thkim2015 Mar 17, 2026
7bc8e6f
Add obfuscateApiCallsMode sub-option for non-call bracket access support
thkim2015 Mar 18, 2026
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2 changes: 2 additions & 0 deletions src/JavaScriptObfuscator.ts
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Expand Up @@ -62,6 +62,8 @@ export class JavaScriptObfuscator implements IJavaScriptObfuscator {
* @type {NodeTransformer[]}
*/
private static readonly nodeTransformersList: NodeTransformer[] = [
NodeTransformer.ApiCallsObfuscationTransformer,
NodeTransformer.BuiltinsObfuscationTransformer,
NodeTransformer.BooleanLiteralTransformer,
NodeTransformer.BlockStatementControlFlowTransformer,
NodeTransformer.BlockStatementSimplifyTransformer,
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16 changes: 16 additions & 0 deletions src/cli/JavaScriptObfuscatorCLI.ts
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Expand Up @@ -247,6 +247,22 @@ export class JavaScriptObfuscatorCLI implements IInitializable {
)
.option('--log <boolean>', 'Enables logging of the information to the console', BooleanSanitizer)
.option('--numbers-to-expressions <boolean>', 'Enables numbers conversion to expressions', BooleanSanitizer)
.option(
'--obfuscate-api-calls <boolean>',
'Enables obfuscation of API method calls (document.getElementById, window.addEventListener, fetch, etc.)',
BooleanSanitizer
)
.option(
'--obfuscate-api-calls-mode <string>',
'Sets obfuscate API calls mode. ' +
'Values: calls-only, all-access. ' +
'Default: calls-only'
)
.option(
'--obfuscate-builtins <boolean>',
'Enables obfuscation of built-in JavaScript objects and functions (console, Math, Object, Array, etc.)',
BooleanSanitizer
)
.option(
'--options-preset <string>',
'Allows to set options preset. ' +
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148 changes: 148 additions & 0 deletions src/constants/BuiltinIdentifierNames.ts
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@@ -0,0 +1,148 @@
/**
* Core JavaScript built-in global objects
*/
export const CORE_JS_BUILTINS: ReadonlySet<string> = new Set([
'Object',
'Function',
'Boolean',
'Symbol',
'Error',
'AggregateError',
'EvalError',
'RangeError',
'ReferenceError',
'SyntaxError',
'TypeError',
'URIError',
'Number',
'BigInt',
'Math',
'Date',
'String',
'RegExp',
'Array',
'Int8Array',
'Uint8Array',
'Uint8ClampedArray',
'Int16Array',
'Uint16Array',
'Int32Array',
'Uint32Array',
'BigInt64Array',
'BigUint64Array',
'Float32Array',
'Float64Array',
'Map',
'Set',
'WeakMap',
'WeakSet',
'WeakRef',
'ArrayBuffer',
'SharedArrayBuffer',
'DataView',
'Atomics',
'JSON',
'Promise',
'Proxy',
'Reflect',
'Intl',
'console'
]);

/**
* Global functions available in all environments
*/
export const GLOBAL_FUNCTIONS: ReadonlySet<string> = new Set([
'parseInt',
'parseFloat',
'isNaN',
'isFinite',
'eval',
'encodeURI',
'encodeURIComponent',
'decodeURI',
'decodeURIComponent',
'setTimeout',
'setInterval',
'clearTimeout',
'clearInterval',
'queueMicrotask',
'structuredClone',
'atob',
'btoa'
]);

/**
* Browser-specific global objects and APIs
*/
export const BROWSER_API_OBJECTS: ReadonlySet<string> = new Set([
'document',
'window',
'navigator',
'location',
'history',
'screen',
'performance',
'localStorage',
'sessionStorage',
'indexedDB',
'crypto',
'fetch',
'XMLHttpRequest',
'URL',
'URLSearchParams',
'FormData',
'Headers',
'Request',
'Response',
'AbortController',
'AbortSignal',
'Blob',
'File',
'FileReader',
'MutationObserver',
'IntersectionObserver',
'ResizeObserver',
'PerformanceObserver',
'WebSocket',
'Worker',
'SharedWorker',
'ServiceWorker',
'BroadcastChannel',
'EventSource',
'CustomEvent',
'Event',
'requestAnimationFrame',
'cancelAnimationFrame',
'requestIdleCallback',
'cancelIdleCallback',
'getComputedStyle',
'matchMedia',
'alert',
'confirm',
'prompt'
]);

/**
* Node.js-specific global objects and APIs
*/
export const NODE_API_OBJECTS: ReadonlySet<string> = new Set([
'process',
'Buffer',
'global',
'__dirname',
'__filename',
'require',
'module',
'exports'
]);

/**
* Combined set of all built-in identifiers (environment-independent)
*/
export const ALL_BUILTINS: ReadonlySet<string> = new Set([
...CORE_JS_BUILTINS,
...GLOBAL_FUNCTIONS,
...BROWSER_API_OBJECTS,
...NODE_API_OBJECTS
]);
10 changes: 10 additions & 0 deletions src/container/modules/node-transformers/ConvertingTransformersModule.ts
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Expand Up @@ -8,8 +8,10 @@ import { IObjectExpressionExtractor } from '../../../interfaces/node-transformer
import { NodeTransformer } from '../../../enums/node-transformers/NodeTransformer';
import { ObjectExpressionExtractor } from '../../../enums/node-transformers/converting-transformers/properties-extractors/ObjectExpressionExtractor';

import { ApiCallsObfuscationTransformer } from '../../../node-transformers/converting-transformers/ApiCallsObfuscationTransformer';
import { BasePropertiesExtractor } from '../../../node-transformers/converting-transformers/object-expression-extractors/BasePropertiesExtractor';
import { BooleanLiteralTransformer } from '../../../node-transformers/converting-transformers/BooleanLiteralTransformer';
import { BuiltinsObfuscationTransformer } from '../../../node-transformers/converting-transformers/BuiltinsObfuscationTransformer';
import { ExportSpecifierTransformer } from '../../../node-transformers/converting-transformers/ExportSpecifierTransformer';
import { MemberExpressionTransformer } from '../../../node-transformers/converting-transformers/MemberExpressionTransformer';
import { ClassFieldTransformer } from '../../../node-transformers/converting-transformers/ClassFieldTransformer';
Expand All @@ -24,6 +26,14 @@ import { TemplateLiteralTransformer } from '../../../node-transformers/convertin

export const convertingTransformersModule: interfaces.ContainerModule = new ContainerModule((bind: interfaces.Bind) => {
// converting transformers
bind<INodeTransformer>(ServiceIdentifiers.INodeTransformer)
.to(ApiCallsObfuscationTransformer)
.whenTargetNamed(NodeTransformer.ApiCallsObfuscationTransformer);

bind<INodeTransformer>(ServiceIdentifiers.INodeTransformer)
.to(BuiltinsObfuscationTransformer)
.whenTargetNamed(NodeTransformer.BuiltinsObfuscationTransformer);

bind<INodeTransformer>(ServiceIdentifiers.INodeTransformer)
.to(BooleanLiteralTransformer)
.whenTargetNamed(NodeTransformer.BooleanLiteralTransformer);
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2 changes: 2 additions & 0 deletions src/enums/node-transformers/NodeTransformer.ts
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Expand Up @@ -15,6 +15,8 @@ export enum NodeTransformer {
FunctionControlFlowTransformer = 'FunctionControlFlowTransformer',
IfStatementSimplifyTransformer = 'IfStatementSimplifyTransformer',
LabeledStatementTransformer = 'LabeledStatementTransformer',
ApiCallsObfuscationTransformer = 'ApiCallsObfuscationTransformer',
BuiltinsObfuscationTransformer = 'BuiltinsObfuscationTransformer',
MemberExpressionTransformer = 'MemberExpressionTransformer',
MetadataTransformer = 'MetadataTransformer',
NumberLiteralTransformer = 'NumberLiteralTransformer',
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9 changes: 9 additions & 0 deletions src/enums/node-transformers/converting-transformers/ObfuscateApiCallsMode.ts
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@@ -0,0 +1,9 @@
import { Utils } from '../../../utils/Utils';

export const ObfuscateApiCallsMode: Readonly<{
CallsOnly: 'calls-only';
AllAccess: 'all-access';
}> = Utils.makeEnum({
CallsOnly: 'calls-only',
AllAccess: 'all-access'
});
4 changes: 4 additions & 0 deletions src/interfaces/options/IOptions.ts
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Expand Up @@ -3,6 +3,7 @@ import { TOptionsPreset } from '../../types/options/TOptionsPreset';
import { TStringArrayIndexesType } from '../../types/options/TStringArrayIndexesType';
import { TStringArrayEncoding } from '../../types/options/TStringArrayEncoding';
import { TStringArrayWrappersType } from '../../types/options/TStringArrayWrappersType';
import { TObfuscateApiCallsMode } from '../../types/options/TObfuscateApiCallsMode';
import { TRenamePropertiesMode } from '../../types/options/TRenamePropertiesMode';
import { TTypeFromEnum } from '../../types/utils/TTypeFromEnum';

Expand Down Expand Up @@ -31,6 +32,9 @@ export interface IOptions {
readonly inputFileName: string;
readonly log: boolean;
readonly numbersToExpressions: boolean;
readonly obfuscateApiCalls: boolean;
readonly obfuscateApiCallsMode: TObfuscateApiCallsMode;
readonly obfuscateBuiltins: boolean;
readonly optionsPreset: TOptionsPreset;
readonly renameGlobals: boolean;
readonly renameProperties: boolean;
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