67 lines
2.6 KiB
TypeScript
67 lines
2.6 KiB
TypeScript
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import { describe, expect, test } from "bun:test";
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import { bunEnv, bunExe, normalizeBunSnapshot, tempDir } from "harness";
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import { join } from "node:path";
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// https://github.com/oven-sh/bun/issues/31401
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// A digit-named module (e.g. `1.ts`) with an anonymous default function must emit a valid identifier.
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describe.concurrent("issue 31401: anonymous default export from digit-named module", () => {
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test("run a digit-named module with an anonymous default function", async () => {
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using dir = tempDir("issue-31401-run", {
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"1.ts": `export default function () {}\nconsole.log("ok");\n`,
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});
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await using proc = Bun.spawn({
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cmd: [bunExe(), join(String(dir), "1.ts")],
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env: bunEnv,
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stderr: "pipe",
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stdout: "pipe",
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});
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const [stdout, stderr, exitCode] = await Promise.all([proc.stdout.text(), proc.stderr.text(), proc.exited]);
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expect(stderr).not.toContain("No identifiers allowed directly after numeric literal");
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expect(normalizeBunSnapshot(stdout)).toMatchInlineSnapshot(`"ok"`);
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expect(exitCode).toBe(0);
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});
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test("import a digit-named module with an anonymous default function", async () => {
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using dir = tempDir("issue-31401-import", {
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"9mod.ts": `export default function () {}\n`,
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"index.ts": `import f from "./9mod.ts";\nconsole.log(typeof f);\n`,
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});
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await using proc = Bun.spawn({
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cmd: [bunExe(), join(String(dir), "index.ts")],
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env: bunEnv,
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stderr: "pipe",
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stdout: "pipe",
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});
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const [stdout, stderr, exitCode] = await Promise.all([proc.stdout.text(), proc.stderr.text(), proc.exited]);
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expect(stderr).not.toContain("No identifiers allowed directly after numeric literal");
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expect(normalizeBunSnapshot(stdout)).toMatchInlineSnapshot(`"function"`);
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expect(exitCode).toBe(0);
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});
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test("transpile-only output uses a valid identifier for the generated default name", async () => {
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using dir = tempDir("issue-31401-transpile", {
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"1.ts": `export default function () {}\n`,
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});
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await using proc = Bun.spawn({
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cmd: [bunExe(), "build", "--no-bundle", join(String(dir), "1.ts")],
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env: bunEnv,
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stderr: "pipe",
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stdout: "pipe",
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});
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const [stdout, stderr, exitCode] = await Promise.all([proc.stdout.text(), proc.stderr.text(), proc.exited]);
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expect(stderr).not.toContain("No identifiers allowed directly after numeric literal");
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// Must be a valid identifier: the leading digit gets an underscore prefix.
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expect(normalizeBunSnapshot(stdout)).toContain("export default function _1_default() {}");
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expect(exitCode).toBe(0);
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});
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});
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