test(auto-install): dynamically import plugin and use fileURLToPath; gate tests by engines to avoid Node 18 CI failures

Author: CharlieHelps

packages/auto-install/test/npm-bare.test.ts

@@ -1,14 +1,15 @@
 import fs from 'node:fs';
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 
 import del from 'del';
 import { it, afterAll } from 'vitest';
 import { rollup } from 'rollup';
 import nodeResolve from '@rollup/plugin-node-resolve';
 
-import autoInstall from '~package';
+// Dynamically import the plugin within gated tests to avoid Node <20 execution
 
-const DIR = import.meta.dirname;
+const DIR = fileURLToPath(new URL('.', import.meta.url));
 const cwd = path.join(DIR, 'fixtures/npm-bare');
 const file = path.join(cwd, 'output/bundle.js');
 const input = path.join(cwd, '../input.js');
@@ -20,6 +21,7 @@ const RUN_ON_THIS_NODE = NODE_MAJOR > 20 || (NODE_MAJOR === 20 && NODE_MINOR >=
 
 it.runIf(RUN_ON_THIS_NODE)('npm, bare', async () => {
   process.chdir(cwd);
+  const { default: autoInstall } = await import('~package');
   const bundle = await rollup({
     input,
     // @ts-expect-error - rollup() ignores output here but tests kept it historically

packages/auto-install/test/npm.test.ts

@@ -1,14 +1,16 @@
 import fs from 'node:fs';
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 
 import del from 'del';
 import { it, expect, afterAll } from 'vitest';
 import { rollup } from 'rollup';
 import nodeResolve from '@rollup/plugin-node-resolve';
 
-import autoInstall from '~package';
+// IMPORTANT: Don't import the plugin at module scope. The plugin requires Node ≥20.19
+// (uses import.meta.dirname). Dynamically import it inside gated tests only.
 
-const DIR = import.meta.dirname;
+const DIR = fileURLToPath(new URL('.', import.meta.url));
 const cwd = path.join(DIR, 'fixtures/npm');
 const file = path.join(cwd, 'output/bundle.js');
 const input = path.join(cwd, '../input.js');
@@ -18,12 +20,14 @@ const PREV_CWD = process.cwd();
 const [NODE_MAJOR, NODE_MINOR] = process.versions.node.split('.').map(Number);
 const RUN_ON_THIS_NODE = NODE_MAJOR > 20 || (NODE_MAJOR === 20 && NODE_MINOR >= 19);
 
-it.runIf(RUN_ON_THIS_NODE)('invalid manager', () => {
+it.runIf(RUN_ON_THIS_NODE)('invalid manager', async () => {
+  const { default: autoInstall } = await import('~package');
   expect(() => autoInstall({ pkgFile, manager: 'foo' as any })).toThrow(RangeError);
 });
 
 it.runIf(RUN_ON_THIS_NODE)('npm', async () => {
   process.chdir(cwd);
+  const { default: autoInstall } = await import('~package');
   const bundle = await rollup({
     input,
     // @ts-expect-error - rollup() ignores output here but tests kept it historically

packages/auto-install/test/pnpm-bare.test.ts

@@ -1,14 +1,15 @@
 import fs from 'node:fs';
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 
 import del from 'del';
 import { it, afterAll } from 'vitest';
 import { rollup } from 'rollup';
 import nodeResolve from '@rollup/plugin-node-resolve';
 
-import autoInstall from '~package';
+// Dynamically import the plugin within gated tests to avoid Node <20 execution
 
-const DIR = import.meta.dirname;
+const DIR = fileURLToPath(new URL('.', import.meta.url));
 const cwd = path.join(DIR, 'fixtures/pnpm-bare');
 const file = path.join(cwd, 'output/bundle.js');
 const input = path.join(cwd, '../input.js');
@@ -19,6 +20,7 @@ const RUN_ON_THIS_NODE = NODE_MAJOR > 20 || (NODE_MAJOR === 20 && NODE_MINOR >=
 
 it.runIf(RUN_ON_THIS_NODE)('pnpm, bare', async () => {
   process.chdir(cwd);
+  const { default: autoInstall } = await import('~package');
   const bundle = await rollup({
     input,
     // @ts-expect-error - rollup() ignores output here but tests kept it historically

packages/auto-install/test/pnpm.test.ts

@@ -1,14 +1,15 @@
 import fs from 'node:fs';
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 
 import del from 'del';
 import { it, afterAll } from 'vitest';
 import { rollup } from 'rollup';
 import nodeResolve from '@rollup/plugin-node-resolve';
 
-import autoInstall from '~package';
+// Dynamically import the plugin within gated tests to avoid Node <20 execution
 
-const DIR = import.meta.dirname;
+const DIR = fileURLToPath(new URL('.', import.meta.url));
 const cwd = path.join(DIR, 'fixtures/pnpm');
 const file = path.join(cwd, 'output/bundle.js');
 const input = path.join(cwd, '../input.js');
@@ -19,6 +20,7 @@ const RUN_ON_THIS_NODE = NODE_MAJOR > 20 || (NODE_MAJOR === 20 && NODE_MINOR >=
 
 it.runIf(RUN_ON_THIS_NODE)('pnpm', async () => {
   process.chdir(cwd);
+  const { default: autoInstall } = await import('~package');
   const bundle = await rollup({
     input,
     // @ts-expect-error - rollup() ignores output here but tests kept it historically

packages/auto-install/test/yarn-bare.test.ts

@@ -1,14 +1,15 @@
 import fs from 'node:fs';
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 
 import del from 'del';
 import { it, afterAll } from 'vitest';
 import { rollup } from 'rollup';
 import nodeResolve from '@rollup/plugin-node-resolve';
 
-import autoInstall from '~package';
+// Dynamically import the plugin within gated tests to avoid Node <20 execution
 
-const DIR = import.meta.dirname;
+const DIR = fileURLToPath(new URL('.', import.meta.url));
 const cwd = path.join(DIR, 'fixtures/yarn-bare');
 const file = path.join(cwd, 'output/bundle.js');
 const input = path.join(cwd, '../input.js');
@@ -34,6 +35,7 @@ it.runIf(RUN_ON_THIS_NODE)('yarn, bare', async () => {
       )
     );
   }
+  const { default: autoInstall } = await import('~package');
   const bundle = await rollup({
     input,
     // @ts-expect-error - rollup() ignores output here but tests kept it historically

packages/auto-install/test/yarn.test.ts

@@ -1,14 +1,15 @@
 import fs from 'node:fs';
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 
 import del from 'del';
 import { it, afterAll } from 'vitest';
 import { rollup } from 'rollup';
 import nodeResolve from '@rollup/plugin-node-resolve';
 
-import autoInstall from '~package';
+// Dynamically import the plugin within gated tests to avoid Node <20 execution
 
-const DIR = import.meta.dirname;
+const DIR = fileURLToPath(new URL('.', import.meta.url));
 const cwd = path.join(DIR, 'fixtures/yarn');
 const file = path.join(cwd, 'output/bundle.js');
 const input = path.join(cwd, '../input.js');
@@ -33,6 +34,7 @@ it.runIf(RUN_ON_THIS_NODE)('yarn', async () => {
       )
     );
   }
+  const { default: autoInstall } = await import('~package');
   const bundle = await rollup({
     input,
     // @ts-expect-error - rollup() ignores output here but tests kept it historically