refactor: enhance stack from

.github/workflows/test.yml

@@ -37,3 +37,22 @@ jobs:
         timeout-minutes: 1
         env:
           FORCE_COLOR: 3
+
+  bun:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js 20.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: 20.x
+      - name: Setup Bun
+        uses: antongolub/action-setup-bun@v1
+
+      - run: npm ci
+      - run: npm run build
+      - run: bun test ./test/bun.test.js
+        timeout-minutes: 1
+        env:
+          FORCE_COLOR: 3

src/core.ts

@@ -32,6 +32,7 @@ import {
   errnoMessage,
   exitCodeInfo,
   formatCmd,
+  getCallerLocation,
   noop,
   parseDuration,
   quote,
@@ -128,7 +129,7 @@ export const $: Shell & Options = new Proxy<Shell & Options>(
         })
       }
     }
-    const from = new Error().stack!.split(/^\s*at\s/m)[2].trim()
+    const from = getCallerLocation()
     if (pieces.some((p) => p == undefined)) {
       throw new Error(`Malformed command at ${from}`)
     }

src/util.ts

@@ -355,3 +355,16 @@ const reservedWords = [
   'done',
   'in',
 ]
+
+export function getCallerLocation(err = new Error()) {
+  return getCallerLocationFromString(err.stack)
+}
+
+export function getCallerLocationFromString(stackString = 'unknown') {
+  return (
+    stackString
+      .split(/^\s*(at\s)?/m)
+      .filter((s) => s?.includes(':'))[2]
+      ?.trim() || stackString
+  )
+}

test/bun.test.js

@@ -0,0 +1,29 @@
+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import assert from 'node:assert'
+import { test, describe } from 'bun:test'
+import '../build/globals.js'
+
+describe('bun', () => {
+  test('smoke test', async () => {
+    const p = await $`echo foo`
+    assert.match(p.stdout, /foo/)
+  })
+
+  test('captures err stack', async () => {
+    const p = await $({ nothrow: true })`echo foo; exit 3`
+    assert.match(p.message, /exit code: 3/)
+  })
+})

test/cli.test.js

@@ -13,7 +13,7 @@
 // limitations under the License.
 
 import assert from 'node:assert'
-import { test, describe, before, beforeEach } from 'node:test'
+import { test, describe, beforeEach } from 'node:test'
 import '../build/globals.js'
 
 describe('cli', () => {
@@ -70,11 +70,6 @@ describe('cli', () => {
     assert.match(out.stdout, /verbose is false/)
   })
 
-  test('supports `--experimental` flag', async () => {
-    let out = await $`echo 'echo("test")' | node build/cli.js --experimental`
-    assert.match(out.stdout, /test/)
-  })
-
   test('supports `--quiet` flag', async () => {
     let p = await $`node build/cli.js --quiet test/fixtures/markdown.md`
     assert.ok(!p.stderr.includes('ignore'), 'ignore was printed')

test/util.test.js

@@ -24,6 +24,7 @@ import {
   quote,
   quotePowerShell,
   randomId,
+  getCallerLocationFromString,
 } from '../build/util.js'
 
 describe('util', () => {
@@ -92,3 +93,50 @@ describe('util', () => {
     )
   })
 })
+
+test('getCallerLocation: empty', () => {
+  assert.equal(getCallerLocationFromString(), 'unknown')
+})
+
+test('getCallerLocation: no-match', () => {
+  assert.equal(getCallerLocationFromString('stack\nstring'), 'stack\nstring')
+})
+
+test(`getCallerLocationFromString-v8`, () => {
+  const stack = `
+    Error
+      at getCallerLocation (/Users/user/test.js:22:17)
+      at e (/Users/user/test.js:34:13)
+      at d (/Users/user/test.js:11:5)
+      at c (/Users/user/test.js:8:5)
+      at b (/Users/user/test.js:5:5)
+      at a (/Users/user/test.js:2:5)
+      at Object.<anonymous> (/Users/user/test.js:37:1)
+      at Module._compile (node:internal/modules/cjs/loader:1254:14)
+      at Module._extensions..js (node:internal/modules/cjs/loader:1308:10)
+      at Module.load (node:internal/modules/cjs/loader:1117:32)
+      at Module._load (node:internal/modules/cjs/loader:958:12)
+    `
+  assert.match(getCallerLocationFromString(stack), /^.*:11:5.*$/)
+})
+
+test(`getCallerLocationFromString-JSC`, () => {
+  const stack = `
+    getCallerLocation@/Users/user/test.js:22:17
+    e@/Users/user/test.js:34:13
+    d@/Users/user/test.js:11:5
+    c@/Users/user/test.js:8:5
+    b@/Users/user/test.js:5:5
+    a@/Users/user/test.js:2:5
+    module code@/Users/user/test.js:37:1
+    evaluate@[native code]
+    moduleEvaluation@[native code]
+    moduleEvaluation@[native code]
+    @[native code]
+    asyncFunctionResume@[native code]
+    promiseReactionJobWithoutPromise@[native code]
+    promiseReactionJob@[native code]
+    d@/Users/user/test.js:11:5
+  `
+  assert.match(getCallerLocationFromString(stack), /^.*:11:5.*$/)
+})

test/win32.test.js

@@ -13,7 +13,7 @@
 // limitations under the License.
 
 import assert from 'node:assert'
-import { test, describe, beforeEach } from 'node:test'
+import { test, describe } from 'node:test'
 import '../build/globals.js'
 
 const _describe = process.platform === 'win32' ? describe : describe.skip