fix: add back bin/node-gyp-bin/node-gyp files (#6941)

This was an unintended breaking change as part of #6554. The `node-gyp`
bin files are not used by the CLI directly but they are relied on by
other tooling.

This partially reverts commit 3a7378d.

.gitattributes

@@ -7,7 +7,7 @@
 /configure text eol=lf
 
 # our cmd scripts always need to be CRLF
-/bin/*.cmd text eol=crlf
+/bin/**/*.cmd text eol=crlf
 
 # ignore all line endings in node_modules since we dont control that
 /node_modules/** -text

bin/node-gyp-bin/node-gyp

@@ -0,0 +1,6 @@
+#!/usr/bin/env sh
+if [ "x$npm_config_node_gyp" = "x" ]; then
+  node "`dirname "$0"`/../../node_modules/node-gyp/bin/node-gyp.js" "$@"
+else
+  "$npm_config_node_gyp" "$@"
+fi

bin/node-gyp-bin/node-gyp.cmd

@@ -0,0 +1,5 @@
+if not defined npm_config_node_gyp (
+  node "%~dp0\..\..\node_modules\node-gyp\bin\node-gyp.js" %*
+) else (
+  node "%npm_config_node_gyp%" %*
+)

test/bin/windows-shims.js

@@ -1,20 +1,23 @@
 const t = require('tap')
 const { spawnSync } = require('child_process')
 const { resolve, join, extname, basename, sep } = require('path')
-const { copyFileSync, readFileSync, chmodSync, readdirSync, rmSync } = require('fs')
+const { copyFileSync, readFileSync, chmodSync, readdirSync, rmSync, statSync } = require('fs')
 const Diff = require('diff')
 const { sync: which } = require('which')
 const { version } = require('../../package.json')
 
-const ROOT = resolve(__dirname, '../..')
-const BIN = join(ROOT, 'bin')
-const SHIMS = readdirSync(BIN).reduce((acc, shim) => {
-  if (extname(shim) !== '.js') {
-    acc[shim] = readFileSync(join(BIN, shim), 'utf-8')
+const readNonJsFiles = (dir) => readdirSync(dir).reduce((acc, shim) => {
+  const p = join(dir, shim)
+  if (extname(p) !== '.js' && !statSync(p).isDirectory()) {
+    acc[shim] = readFileSync(p, 'utf-8')
   }
   return acc
 }, {})
 
+const ROOT = resolve(__dirname, '../..')
+const BIN = join(ROOT, 'bin')
+const SHIMS = readNonJsFiles(BIN)
+const NODE_GYP = readNonJsFiles(join(BIN, 'node-gyp-bin'))
 const SHIM_EXTS = [...new Set(Object.keys(SHIMS).map(p => extname(p)))]
 
 // windows requires each segment of a command path to be quoted when using shell: true
@@ -63,6 +66,21 @@ t.test('shim contents', t => {
   })
 })
 
+t.test('node-gyp', t => {
+  // these files need to exist to avoid breaking yarn 1.x
+
+  for (const [key, file] of Object.entries(NODE_GYP)) {
+    t.match(file, /npm_config_node_gyp/, `${key} contains env var`)
+    t.match(
+      file,
+      /[\\/]\.\.[\\/]\.\.[\\/]node_modules[\\/]node-gyp[\\/]bin[\\/]node-gyp\.js/,
+      `${key} contains path`
+    )
+  }
+
+  t.end()
+})
+
 t.test('run shims', t => {
   const path = t.testdir({
     ...SHIMS,