234 lines
8.4 KiB
TypeScript
234 lines
8.4 KiB
TypeScript
import { createHash } from "node:crypto";
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import { readFile, writeFile } from "node:fs/promises";
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import { join } from "node:path";
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import { TraceMap, originalPositionFor } from "@jridgewell/trace-mapping";
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import { expect } from "vitest";
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import { createTestTempDirectory } from "../../fixtures/temporaryDirectory.js";
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import { cliTest } from "../../support/cli/cliFixture.js";
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import { analyzeJavaScriptDirectory } from "../../support/cli/javascriptApplication.js";
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import { writeFixtureFiles } from "../../support/javascriptApplicationFixture.js";
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cliTest.for(["CLI", "stdio MCP"] as const)(
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"recovers retained prefixed source-map originals and byte identity through %s",
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async (surface, { cli }) => {
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const root = await createTestTempDirectory("rea-retained-map-prefix-");
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const original = "export const answer: number = 42;";
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const mapText = `\uFEFF)]}'retained response\r\n${JSON.stringify({
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version: 3,
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sources: ["original.ts"],
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sourcesContent: [original],
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names: [],
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mappings: "AAAA",
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})}`;
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const mapPath = join(root, "bundle.js.map");
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await writeFile(
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join(root, "bundle.js"),
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"export const answer = 42;\n//# sourceMappingURL=bundle.js.map\n",
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);
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await writeFile(mapPath, mapText);
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const { graph } = await analyzeJavaScriptDirectory(surface, cli, root);
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const mapDigest = createHash("sha256").update(mapText).digest("hex");
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const originalDigest = createHash("sha256").update(original).digest("hex");
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expect(graph.nodes).toContainEqual(
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expect.objectContaining({
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kind: "source-module",
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identity: expect.objectContaining({
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strategy: "source-map-original",
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source_map_sha256: mapDigest,
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original_source: "original.ts",
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source_sha256: originalDigest,
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}),
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observations: expect.arrayContaining([
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expect.objectContaining({
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source_map_reference: expect.objectContaining({
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source_name: "original.ts",
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map_path: "bundle.js.map",
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}),
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properties: expect.objectContaining({
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source_index: 0,
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declaration_index: 0,
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source_name_available: true,
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content_available: true,
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content_sha256: originalDigest,
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}),
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evidence: expect.objectContaining({
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artifact: expect.objectContaining({ sha256: mapDigest }),
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}),
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}),
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]),
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}),
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);
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expect(graph.coverage.status).toBe("complete");
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expect(await readFile(mapPath, "utf8")).toBe(mapText);
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},
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);
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cliTest.for(["CLI", "stdio MCP"] as const)(
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"retains nullable source-map declarations and aligned content through %s",
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async (surface, { cli }) => {
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const root = await createTestTempDirectory("rea-nullable-map-");
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const original = "export const answer: number = 42;";
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const unnamed = "retained source text without a declared name";
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const maps = {
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"absent.js.map": JSON.stringify({
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version: 3,
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sources: ["unembedded.ts"],
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sourcesContent: null,
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names: [],
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mappings: "AAAA",
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}),
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"mixed.js.map": JSON.stringify({
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version: 3,
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sources: [null, "original.ts"],
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sourcesContent: [unnamed, original],
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names: [],
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mappings: "ACAA",
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}),
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"unnamed-empty.js.map": JSON.stringify({
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version: 3,
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sources: [null, "original.ts"],
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sourcesContent: [null, original],
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names: [],
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mappings: "ACAA",
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}),
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};
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await writeFixtureFiles(root, {
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...maps,
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"absent.js":
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"export const absent = 1;\n//# sourceMappingURL=absent.js.map\n",
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"mixed.js":
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"export const answer = 42;\n//# sourceMappingURL=mixed.js.map\n",
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"unnamed-empty.js":
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"export const answer = 42;\n//# sourceMappingURL=unnamed-empty.js.map\n",
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});
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for (const [mapPath, expectedSource] of [
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["absent.js.map", "unembedded.ts"],
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["mixed.js.map", "original.ts"],
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["unnamed-empty.js.map", "original.ts"],
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] as const)
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expect(
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originalPositionFor(new TraceMap(maps[mapPath], `file:///${mapPath}`), {
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line: 1,
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column: 0,
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}).source,
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).toBe(`file:///${expectedSource}`);
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const { graph } = await analyzeJavaScriptDirectory(surface, cli, root);
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const digest = (text: string) =>
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createHash("sha256").update(text).digest("hex");
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expect(
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graph.nodes.filter(
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(node) => node.identity.strategy === "source-map-original",
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),
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).toHaveLength(3);
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for (const [name, mapPath, content, sourceIndex] of [
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["unembedded.ts", "absent.js.map", null, 0],
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["original.ts", "mixed.js.map", original, 1],
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["original.ts", "unnamed-empty.js.map", original, 1],
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] as const) {
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const mapDigest = digest(maps[mapPath]);
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expect(graph.nodes).toContainEqual(
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expect.objectContaining({
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kind: "source-module",
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identity: expect.objectContaining({
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strategy: "source-map-original",
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source_map_sha256: mapDigest,
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original_source: name,
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source_sha256: content === null ? null : digest(content),
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}),
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observations: expect.arrayContaining([
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expect.objectContaining({
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source_map_reference: expect.objectContaining({
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source_name: name,
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map_path: mapPath,
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}),
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properties: expect.objectContaining({
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source_index: sourceIndex,
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declaration_index: sourceIndex,
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source_name_available: true,
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content_available: content !== null,
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}),
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evidence: expect.objectContaining({
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artifact: expect.objectContaining({ sha256: mapDigest }),
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}),
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}),
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]),
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}),
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);
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}
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for (const [mapPath, content] of [
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["mixed.js.map", unnamed],
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["unnamed-empty.js.map", null],
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] as const)
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expect(graph.nodes).toContainEqual(
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expect.objectContaining({
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kind: "unknown",
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observations: expect.arrayContaining([
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expect.objectContaining({
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source_map_reference: null,
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properties: expect.objectContaining({
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source_index: 0,
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declaration_index: 0,
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source_name_available: false,
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content_available: content !== null,
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content_sha256: content === null ? null : digest(content),
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}),
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evidence: expect.objectContaining({
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artifact: expect.objectContaining({
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sha256: digest(maps[mapPath]),
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}),
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}),
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}),
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]),
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}),
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);
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expect(graph.coverage.status).toBe("complete");
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for (const [path, text] of Object.entries(maps))
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expect(await readFile(join(root, path), "utf8")).toBe(text);
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},
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);
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cliTest.for(["CLI", "stdio MCP"] as const)(
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"rejects non-string source-map names without inventing originals through %s",
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async (surface, { cli }) => {
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const root = await createTestTempDirectory("rea-invalid-map-source-");
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const mapText = JSON.stringify({
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version: 3,
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sources: [42, "discarded.ts"],
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sourcesContent: [null, "export const answer: number = 42;"],
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names: [],
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mappings: "ACAA",
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});
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await writeFixtureFiles(root, { "invalid.js.map": mapText });
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const { graph } = await analyzeJavaScriptDirectory(surface, cli, root);
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expect(graph.coverage.status).toBe("partial");
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expect(
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graph.nodes.some(
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(node) => node.identity.strategy === "source-map-original",
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),
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).toBe(false);
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expect(graph.nodes).toContainEqual(
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expect.objectContaining({
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kind: "unknown",
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observations: expect.arrayContaining([
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expect.objectContaining({
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properties: expect.objectContaining({
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operation: "parse-local-source-map",
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}),
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evidence: expect.objectContaining({
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artifact: expect.objectContaining({
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sha256: createHash("sha256").update(mapText).digest("hex"),
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}),
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limitations: expect.arrayContaining([
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"Source map contains a non-string source name.",
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]),
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}),
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}),
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]),
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}),
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);
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expect(await readFile(join(root, "invalid.js.map"), "utf8")).toBe(mapText);
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},
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);
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