feat: add PackageManager and update extractPackageApiEffect

src/bun-package-manager.test.ts

@@ -0,0 +1,32 @@
+import { Effect } from "effect";
+import { temporaryDirectoryTask } from "tempy";
+import { expect, test } from "vitest";
+import { bunPackageManager } from "./bun-package-manager";
+import type { InstallPackageOptions } from "./package-manager";
+
+const bun = bunPackageManager();
+
+const _installPackage = (options: InstallPackageOptions) =>
+	Effect.runPromise(bun.installPackage(options));
+
+test("invalid package", async () => {
+	await temporaryDirectoryTask(async (cwd) => {
+		await expect(_installPackage({ pkg: "", cwd })).rejects.toThrow();
+	});
+});
+
+test("package with no production dependencies", async () => {
+	await temporaryDirectoryTask(async (cwd) => {
+		await expect(_installPackage({ pkg: "[email protected]", cwd })).resolves.toStrictEqual([
+			"[email protected]",
+		]);
+	});
+});
+
+test("package with some production dependencies", async () => {
+	await temporaryDirectoryTask(async (cwd) => {
+		await expect(_installPackage({ pkg: "[email protected]", cwd })).resolves.toContain(
+			"[email protected]",
+		);
+	});
+});

src/bun-package-manager.ts

@@ -0,0 +1,29 @@
+import { Effect } from "effect";
+import { execa } from "execa";
+import { InstallPackageError, PackageManager } from "./package-manager";
+
+/** @internal */
+export const bunPackageManager = (bunPath = "bun") =>
+	PackageManager.of({
+		installPackage: ({ pkg, cwd }) =>
+			Effect.gen(function* (_) {
+				// Run `bun add <pkg> --verbose`.
+				// See https://bun.sh/docs/cli/add.
+				const { stdout } = yield* _(
+					Effect.tryPromise({
+						try: () => execa(bunPath, ["add", pkg, "--verbose"], { cwd }),
+						catch: (e) => new InstallPackageError({ cause: e }),
+					}),
+				);
+
+				// With verbose output on, bun prints one line per installed package
+				// (e.g., "[email protected]"), including all installed dependencies.
+				// These lines are between the two delimiting lines found here:
+				// https://github.com/oven-sh/bun/blob/972a7b7080bd3066b54dcb43e9c91c5dfa26a69c/src/install/lockfile.zig#L5369-L5370.
+				const lines = stdout.split("\n");
+				const beginHash = lines.findIndex((line) => line.startsWith("-- BEGIN SHA512/256"));
+				const endHash = lines.findIndex((line) => line.startsWith("-- END HASH"));
+				const installedPackages = lines.slice(beginHash + 1, endHash);
+				return installedPackages;
+			}),
+	});

src/extract-package-api-effect.ts

@@ -3,9 +3,9 @@ import { performance } from "node:perf_hooks";
 import { join } from "pathe";
 import { createProject } from "./create-project";
 import type { ExtractPackageApiOptions, PackageApi } from "./extract-package-api";
-import { installPackage } from "./install-package";
 import { packageDeclarations } from "./package-declarations";
 import { packageJson } from "./package-json";
+import { PackageManager } from "./package-manager";
 import { packageName } from "./package-name";
 import { packageOverview } from "./package-overview";
 import { packageTypes } from "./package-types";
@@ -16,21 +16,21 @@ export const extractPackageApiEffect = ({
 	pkg,
 	subpath = ".",
 	maxDepth = 5,
-	bunPath = "bun",
 }: ExtractPackageApiOptions) =>
 	Effect.gen(function* (_) {
 		const startTime = performance.now();
 		const pkgName = yield* _(packageName(pkg));
 		const { path: cwd } = yield* _(workDir);
-		const packages = yield* _(installPackage({ pkg, cwd, bunPath }));
+		const pm = yield* _(PackageManager);
+		const packages = yield* _(pm.installPackage({ pkg, cwd }));
 		const pkgDir = join(cwd, "node_modules", pkgName);
 		const pkgJson = yield* _(packageJson(pkgDir));
 		const types = yield* _(packageTypes(pkgJson, subpath));
 		const indexFilePath = join(pkgDir, types);
 		const { project, indexFile } = yield* _(createProject({ indexFilePath, cwd }));
 		const overview = packageOverview(indexFile);
 		const declarations = yield* _(packageDeclarations({ pkgName, project, indexFile, maxDepth }));
-		return {
+		const pkgApi: PackageApi = {
 			name: pkgJson.name,
 			version: pkgJson.version,
 			subpath,
@@ -40,5 +40,6 @@ export const extractPackageApiEffect = ({
 			packages,
 			analyzedAt: new Date().toISOString(),
 			analyzedIn: Math.round(performance.now() - startTime),
-		} satisfies PackageApi;
+		};
+		return pkgApi;
 	});

src/extract-package-api.ts

@@ -1,6 +1,8 @@
 import { Effect } from "effect";
+import { bunPackageManager } from "./bun-package-manager";
 import type { ExtractedDeclaration } from "./extract-declarations";
 import { extractPackageApiEffect } from "./extract-package-api-effect";
+import { PackageManager } from "./package-manager";
 
 /**
 `ExtractPackageApiOptions` contains all the options
@@ -129,4 +131,8 @@ export const extractPackageApi = ({
 	maxDepth = 5,
 	bunPath = "bun",
 }: ExtractPackageApiOptions): Promise<PackageApi> =>
-	Effect.runPromise(Effect.scoped(extractPackageApiEffect({ pkg, subpath, maxDepth, bunPath })));
+	extractPackageApiEffect({ pkg, subpath, maxDepth }).pipe(
+		Effect.scoped,
+		Effect.provideService(PackageManager, bunPackageManager(bunPath)),
+		Effect.runPromise,
+	);

src/index.ts

@@ -2,6 +2,7 @@ export type {
 	AllExtractedDeclaration,
 	AllExtractedDeclarationKind,
 } from "./all-extracted-declaration";
+export { bunPackageManager } from "./bun-package-manager";
 export { ProjectError } from "./create-project";
 export type {
 	ExtractedClass,
@@ -36,9 +37,9 @@ export {
 export { extractPackageApiEffect } from "./extract-package-api-effect";
 export type { ExtractedTypeAlias } from "./extract-type-alias";
 export type { ExtractedVariable } from "./extract-variable";
-export { InstallPackageError, installPackage, type InstallPackageOptions } from "./install-package";
 export { PackageDeclarationsError } from "./package-declarations";
 export { PackageJsonError, packageJson } from "./package-json";
+export { InstallPackageError, PackageManager, type InstallPackageOptions } from "./package-manager";
 export { PackageNameError, packageName } from "./package-name";
 export { PackageTypesError, packageTypes } from "./package-types";
 export { parseDocComment } from "./parse-doc-comment";

src/package-manager.ts

@@ -0,0 +1,23 @@
+import { Context, Data, Effect } from "effect";
+
+/** @internal */
+export type InstallPackageOptions = {
+	pkg: string;
+	cwd: string;
+};
+
+/** @internal */
+export class InstallPackageError extends Data.TaggedError("InstallPackageError")<{
+	cause?: unknown;
+}> {}
+
+/** @internal */
+export class PackageManager extends Context.Tag("PackageManager")<
+	PackageManager,
+	{
+		readonly installPackage: ({
+			pkg,
+			cwd,
+		}: InstallPackageOptions) => Effect.Effect<string[], InstallPackageError>;
+	}
+>() {}