72 lines
2.6 KiB
TypeScript
72 lines
2.6 KiB
TypeScript
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import { expect, test } from "bun:test";
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test("scanImports respects trimUnusedImports", () => {
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const transpiler = new Bun.Transpiler({
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trimUnusedImports: true,
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loader: "tsx",
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});
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// Unused named import should be trimmed
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expect(transpiler.scanImports(`import { Component } from "./Component";`)).toEqual([]);
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// Unused default import should be trimmed
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expect(transpiler.scanImports(`import Foo from "./Foo";`)).toEqual([]);
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// Unused namespace import should be trimmed
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expect(transpiler.scanImports(`import * as Utils from "./Utils";`)).toEqual([]);
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// Used named import should be kept
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expect(transpiler.scanImports(`import { Component } from "./Component"; console.log(Component);`)).toEqual([
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{ path: "./Component", kind: "import-statement" },
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]);
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// Bare/side-effect import should always be kept
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expect(transpiler.scanImports(`import "./side-effect";`)).toEqual([
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{ path: "./side-effect", kind: "import-statement" },
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]);
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// Type-only import should always be trimmed
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expect(transpiler.scanImports(`import type { Foo } from "./Foo";`)).toEqual([]);
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});
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test("scan respects trimUnusedImports", () => {
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const transpiler = new Bun.Transpiler({
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trimUnusedImports: true,
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loader: "tsx",
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});
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// Unused named import should be trimmed from scan result
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const unusedResult = transpiler.scan(`import { Component } from "./Component";`);
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expect(unusedResult.imports).toEqual([]);
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// Used named import should be kept in scan result
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const usedResult = transpiler.scan(`import { Component } from "./Component"; console.log(Component);`);
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expect(usedResult.imports).toEqual([{ path: "./Component", kind: "import-statement" }]);
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// Bare/side-effect import should always be kept
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const sideEffectResult = transpiler.scan(`import "./side-effect";`);
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expect(sideEffectResult.imports).toEqual([{ path: "./side-effect", kind: "import-statement" }]);
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});
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test("scanImports returns all imports when trimUnusedImports is false", () => {
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const transpiler = new Bun.Transpiler({
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trimUnusedImports: false,
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loader: "tsx",
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});
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// Unused named import should NOT be trimmed when option is false
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expect(transpiler.scanImports(`import { Component } from "./Component";`)).toEqual([
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{ path: "./Component", kind: "import-statement" },
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]);
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});
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test("scan returns all imports when trimUnusedImports is false", () => {
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const transpiler = new Bun.Transpiler({
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trimUnusedImports: false,
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loader: "tsx",
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});
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const result = transpiler.scan(`import { Component } from "./Component";`);
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expect(result.imports).toEqual([{ path: "./Component", kind: "import-statement" }]);
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});
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