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Merge pull request #792 from javascript-obfuscator/export-specifier-t…
…ransformer Added `ExportSpecifierTransformer`
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67 changes: 67 additions & 0 deletions
67
src/node-transformers/converting-transformers/ExportSpecifierTransformer.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| import { inject, injectable, } from 'inversify'; | ||
| import { ServiceIdentifiers } from '../../container/ServiceIdentifiers'; | ||
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| import * as ESTree from 'estree'; | ||
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| import { IOptions } from '../../interfaces/options/IOptions'; | ||
| import { IRandomGenerator } from '../../interfaces/utils/IRandomGenerator'; | ||
| import { IVisitor } from '../../interfaces/node-transformers/IVisitor'; | ||
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| import { NodeTransformationStage } from '../../enums/node-transformers/NodeTransformationStage'; | ||
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| import { AbstractNodeTransformer } from '../AbstractNodeTransformer'; | ||
| import { NodeGuards } from '../../node/NodeGuards'; | ||
| import { NodeUtils } from '../../node/NodeUtils'; | ||
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| @injectable() | ||
| export class ExportSpecifierTransformer extends AbstractNodeTransformer { | ||
| /** | ||
| * @param {IRandomGenerator} randomGenerator | ||
| * @param {IOptions} options | ||
| */ | ||
| public constructor ( | ||
| @inject(ServiceIdentifiers.IRandomGenerator) randomGenerator: IRandomGenerator, | ||
| @inject(ServiceIdentifiers.IOptions) options: IOptions | ||
| ) { | ||
| super(randomGenerator, options); | ||
| } | ||
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| /** | ||
| * @param {NodeTransformationStage} nodeTransformationStage | ||
| * @returns {IVisitor | null} | ||
| */ | ||
| public getVisitor (nodeTransformationStage: NodeTransformationStage): IVisitor | null { | ||
| switch (nodeTransformationStage) { | ||
| case NodeTransformationStage.Converting: | ||
| return { | ||
| enter: (node: ESTree.Node, parentNode: ESTree.Node | null): ESTree.Node | undefined => { | ||
| if (parentNode && NodeGuards.isExportSpecifierNode(node)) { | ||
| return this.transformNode(node, parentNode); | ||
| } | ||
| } | ||
| }; | ||
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| default: | ||
| return null; | ||
| } | ||
| } | ||
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| /** | ||
| * Replaces: | ||
| * export {foo}; | ||
| * | ||
| * on: | ||
| * export {foo as foo}; | ||
| * | ||
| * @param {ExportSpecifier} exportSpecifierNode | ||
| * @param {Node} parentNode | ||
| * @returns {Node} | ||
| */ | ||
| public transformNode (exportSpecifierNode: ESTree.ExportSpecifier, parentNode: ESTree.Node): ESTree.Node { | ||
| if (exportSpecifierNode.local.name === exportSpecifierNode.exported.name) { | ||
| exportSpecifierNode.exported = NodeUtils.clone(exportSpecifierNode.local); | ||
| } | ||
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| return exportSpecifierNode; | ||
| } | ||
| } |
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113 changes: 113 additions & 0 deletions
113
...s/converting-transformers/export-specifier-transformer/ExportSpecifierTransformer.spec.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| import { assert } from 'chai'; | ||
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| import { NO_ADDITIONAL_NODES_PRESET } from '../../../../../src/options/presets/NoCustomNodes'; | ||
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| import { readFileAsString } from '../../../../helpers/readFileAsString'; | ||
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| import { JavaScriptObfuscator } from '../../../../../src/JavaScriptObfuscatorFacade'; | ||
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| describe('ExportSpecifierTransformer', () => { | ||
| describe('Variant #1: exported constant', () => { | ||
| describe('Variant #1:`renameGlobals` option is enabled', () => { | ||
| const regExp: RegExp = new RegExp( | ||
| 'const _0x([a-f0-9]){4,6} *= *0x1; *' + | ||
| 'export *{_0x([a-f0-9]){4,6} as foo};' | ||
| ); | ||
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| let obfuscatedCode: string; | ||
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| before(() => { | ||
| const code: string = readFileAsString(__dirname + '/fixtures/exported-constant.js'); | ||
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| obfuscatedCode = JavaScriptObfuscator.obfuscate( | ||
| code, | ||
| { | ||
| ...NO_ADDITIONAL_NODES_PRESET, | ||
| renameGlobals: true | ||
| } | ||
| ).getObfuscatedCode(); | ||
| }); | ||
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| it('should transform export specifier node', () => { | ||
| assert.match(obfuscatedCode, regExp); | ||
| }); | ||
| }); | ||
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| describe('Variant #2: `renameGlobals` option is disabled', () => { | ||
| const regExp: RegExp = new RegExp( | ||
| 'const foo *= *0x1; *' + | ||
| 'export *{foo};' | ||
| ); | ||
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| let obfuscatedCode: string; | ||
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| before(() => { | ||
| const code: string = readFileAsString(__dirname + '/fixtures/exported-constant.js'); | ||
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| obfuscatedCode = JavaScriptObfuscator.obfuscate( | ||
| code, | ||
| { | ||
| ...NO_ADDITIONAL_NODES_PRESET, | ||
| renameGlobals: false | ||
| } | ||
| ).getObfuscatedCode(); | ||
| }); | ||
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| it('should not transform export specifier node', () => { | ||
| assert.match(obfuscatedCode, regExp); | ||
| }); | ||
| }); | ||
| }); | ||
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| describe('Variant #2: exported import', () => { | ||
| describe('Variant #1:`renameGlobals` option is enabled', () => { | ||
| const regExp: RegExp = new RegExp( | ||
| 'import _0x([a-f0-9]){4,6} from *\'./bar\'; *' + | ||
| 'export *{_0x([a-f0-9]){4,6} as foo};' | ||
| ); | ||
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| let obfuscatedCode: string; | ||
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| before(() => { | ||
| const code: string = readFileAsString(__dirname + '/fixtures/exported-import.js'); | ||
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| obfuscatedCode = JavaScriptObfuscator.obfuscate( | ||
| code, | ||
| { | ||
| ...NO_ADDITIONAL_NODES_PRESET, | ||
| renameGlobals: true | ||
| } | ||
| ).getObfuscatedCode(); | ||
| }); | ||
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| it('should transform export specifier node', () => { | ||
| assert.match(obfuscatedCode, regExp); | ||
| }); | ||
| }); | ||
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| describe('Variant #2: `renameGlobals` option is disabled', () => { | ||
| const regExp: RegExp = new RegExp( | ||
| 'import _0x([a-f0-9]){4,6} from *\'./bar\'; *' + | ||
| 'export *{_0x([a-f0-9]){4,6} as foo};' | ||
| ); | ||
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| let obfuscatedCode: string; | ||
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| before(() => { | ||
| const code: string = readFileAsString(__dirname + '/fixtures/exported-import.js'); | ||
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| obfuscatedCode = JavaScriptObfuscator.obfuscate( | ||
| code, | ||
| { | ||
| ...NO_ADDITIONAL_NODES_PRESET, | ||
| renameGlobals: false | ||
| } | ||
| ).getObfuscatedCode(); | ||
| }); | ||
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| it('should transform export specifier node', () => { | ||
| assert.match(obfuscatedCode, regExp); | ||
| }); | ||
| }); | ||
| }); | ||
| }); |
2 changes: 2 additions & 0 deletions
2
...ormers/converting-transformers/export-specifier-transformer/fixtures/exported-constant.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| const foo = 1; | ||
| export {foo}; |
2 changes: 2 additions & 0 deletions
2
...sformers/converting-transformers/export-specifier-transformer/fixtures/exported-import.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| import foo from './bar'; | ||
| export {foo}; |
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