50 lines
1.2 KiB
TypeScript
50 lines
1.2 KiB
TypeScript
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import { expect, test } from "bun:test";
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import { tempDir } from "harness";
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test("bun build produces valid JS for unused dynamic imports", async () => {
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using dir = tempDir("issue-24709", {
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"void-import.ts": `
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export function main() {
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void import("./dep.ts");
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}
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`,
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"bare-import.ts": `
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export function main() {
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import("./dep.ts");
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}
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`,
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"dep.ts": `export const x = 1;`,
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});
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const transpiler = new Bun.Transpiler();
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// Test void import("...")
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{
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const result = await Bun.build({
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entrypoints: [`${dir}/void-import.ts`],
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});
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expect(result.success).toBe(true);
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const output = await result.outputs[0].text();
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// The output must not contain an empty arrow function body like "() => )"
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expect(output).not.toContain("() => )");
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// Validate the output is syntactically valid JS by scanning it
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expect(() => transpiler.scanImports(output)).not.toThrow();
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}
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// Test bare import("...")
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{
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const result = await Bun.build({
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entrypoints: [`${dir}/bare-import.ts`],
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});
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expect(result.success).toBe(true);
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const output = await result.outputs[0].text();
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expect(output).not.toContain("() => )");
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expect(() => transpiler.scanImports(output)).not.toThrow();
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}
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});
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