ts-minifer/dist/__tests__/compressor.test.js

Advanced TypeScript code minification and compression tool

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
    return function (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
const fs = __importStar(require("fs"));
const path = __importStar(require("path"));
const compressor_1 = require("../compressor");
const types_1 = require("../types");
describe('TypeScriptCompressor', () => {
    let compressor;
    const testDir = path.join(__dirname, 'test-files');
    beforeEach(() => {
        compressor = new compressor_1.TypeScriptCompressor(false);
        // Ensure test directory exists
        if (!fs.existsSync(testDir)) {
            fs.mkdirSync(testDir, { recursive: true });
        }
    });
    afterEach(() => {
        // Clean up test files
        fs.rmSync(testDir, { recursive: true, force: true });
    });
    const createTestFile = (filename, content) => {
        fs.writeFileSync(path.join(testDir, filename), content);
    };
    test('compresses single file with minimal settings', () => {
        createTestFile('sample.ts', `
      // This is a comment
      const longVariableName = 'Hello World';
      function longFunctionName() {
        console.log(longVariableName);
      }
      longFunctionName();
    `);
        const result = compressor.compressFiles([testDir], {
            level: types_1.CompressionLevel.MINIMAL,
            outputFormat: 'single'
        });
        expect(result.outputFiles.length).toBe(1);
        expect(result.stats.compressionRatio).toBeGreaterThan(0);
        const compressedContent = fs.readFileSync(result.outputFiles[0], 'utf-8');
        expect(compressedContent).not.toContain('// This is a comment');
    });
    test('compresses multiple files with aggressive settings', () => {
        createTestFile('file1.ts', `
      const complexVariableName = 'First File';
      export function complexFunctionName() {
        return complexVariableName;
      }
    `);
        createTestFile('file2.ts', `
      const anotherComplexVariable = 'Second File';
      export function anotherComplexFunction() {
        return anotherComplexVariable;
      }
    `);
        const result = compressor.compressFiles([testDir], {
            level: types_1.CompressionLevel.AGGRESSIVE,
            outputFormat: 'multiple',
            generateSourceMaps: true
        });
        expect(result.outputFiles.length).toBe(2);
        expect(result.sourceMapFiles?.length).toBe(2);
        expect(result.stats.compressionRatio).toBeGreaterThan(0);
    });
    test('handles source map generation', () => {
        createTestFile('sourcemap.ts', `
      function originalFunction() {
        const originalVariable = 'Test';
        return originalVariable;
      }
    `);
        const result = compressor.compressFiles([testDir], {
            level: types_1.CompressionLevel.MINIMAL,
            outputFormat: 'single',
            generateSourceMaps: true
        });
        expect(result.sourceMapFiles?.length).toBe(1);
        const sourceMapContent = fs.readFileSync(result.sourceMapFiles[0], 'utf-8');
        expect(sourceMapContent).toBeTruthy();
    });
    test('excludes specified files', () => {
        createTestFile('include.ts', `
      const includeVar = 'Include Me';
    `);
        createTestFile('exclude.ts', `
      const excludeVar = 'Exclude Me';
    `);
        const result = compressor.compressFiles([testDir], {
            level: types_1.CompressionLevel.MINIMAL,
            outputFormat: 'multiple',
            excludePatterns: ['**/exclude.ts']
        });
        const outputFileNames = result.outputFiles.map(f => path.basename(f));
        expect(outputFileNames).toContain('include.ts');
        expect(outputFileNames).not.toContain('exclude.ts');
    });
});
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