mirror of https://github.com/webpack/webpack.git
31 lines
1.3 KiB
JavaScript
31 lines
1.3 KiB
JavaScript
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// Test for issue #15947 - ESM library with dynamic imports
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it("should use new URL() for dynamic imports in ESM library output", () => {
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// This test verifies that dynamic imports in ESM library output
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// use new URL() with import.meta.url for proper path resolution
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// in nested bundling scenarios
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const fs = require("fs");
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const path = require("path");
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// Read the generated library output file (lib.js)
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const outputPath = path.join(__dirname, "lib.js");
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const content = fs.readFileSync(outputPath, "utf-8");
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// The correct implementation should use: import(new URL('./chunk.xxx.js', import.meta.url))
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// instead of: import("./" + __webpack_require__.u(chunkId))
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// This test should FAIL until issue #15947 is fixed
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// Check that webpack uses new URL() for dynamic imports (expected behavior)
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expect(content).toMatch(/new\s+URL\s*\([^)]*import\.meta\.url/); // Should use new URL
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expect(content).not.toMatch(/import\s*\(\s*["']\.\/["']\s*\+/); // Should NOT use string concatenation
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// Verify that the chunk file was created
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const chunkFiles = fs
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.readdirSync(__dirname)
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.filter(f => f.startsWith("chunk.") && f.endsWith(".js"));
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expect(chunkFiles.length).toBeGreaterThan(0);
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// Verify the ESM export is present
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expect(content).toMatch(/export\s*\{/);
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});
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