1 files changed, 144 insertions, 0 deletions
diff --git a/node_modules/vue-loader/lib/loaders/pitcher.js b/node_modules/vue-loader/lib/loaders/pitcher.js
new file mode 100644
index 00000000..0bc77046
--- /dev/null
+++ b/node_modules/vue-loader/lib/loaders/pitcher.js
@@ -0,0 +1,144 @@
+const qs = require('querystring')
+const loaderUtils = require('loader-utils')
+const hash = require('hash-sum')
+const selfPath = require.resolve('../index')
+const templateLoaderPath = require.resolve('./templateLoader')
+const stylePostLoaderPath = require.resolve('./stylePostLoader')
+
+const isESLintLoader = l => /(\/|\\|@)eslint-loader/.test(l.path)
+const isNullLoader = l => /(\/|\\|@)null-loader/.test(l.path)
+const isCSSLoader = l => /(\/|\\|@)css-loader/.test(l.path)
+const isPitcher = l => l.path !== __filename
+
+const dedupeESLintLoader = loaders => {
+  const res = []
+  let seen = false
+  loaders.forEach(l => {
+    if (!isESLintLoader(l)) {
+      res.push(l)
+    } else if (!seen) {
+      seen = true
+      res.push(l)
+    }
+  })
+  return res
+}
+
+module.exports = code => code
+
+// This pitching loader is responsible for intercepting all vue block requests
+// and transform it into appropriate requests.
+module.exports.pitch = function (remainingRequest) {
+  const options = loaderUtils.getOptions(this)
+  const { cacheDirectory, cacheIdentifier } = options
+  const query = qs.parse(this.resourceQuery.slice(1))
+
+  let loaders = this.loaders
+
+  // if this is a language block request, eslint-loader may get matched
+  // multiple times
+  if (query.type) {
+    // if this is an inline block, since the whole file itself is being linted,
+    // remove eslint-loader to avoid duplicate linting.
+    if (/\.vue$/.test(this.resourcePath)) {
+      loaders = loaders.filter(l => !isESLintLoader(l))
+    } else {
+      // This is a src import. Just make sure there's not more than 1 instance
+      // of eslint present.
+      loaders = dedupeESLintLoader(loaders)
+    }
+  }
+
+  // remove self
+  loaders = loaders.filter(isPitcher)
+
+  // do not inject if user uses null-loader to void the type (#1239)
+  if (loaders.some(isNullLoader)) {
+    return
+  }
+
+  const genRequest = loaders => {
+    // Important: dedupe since both the original rule
+    // and the cloned rule would match a source import request.
+    // also make sure to dedupe based on loader path.
+    // assumes you'd probably never want to apply the same loader on the same
+    // file twice.
+    // Exception: in Vue CLI we do need two instances of postcss-loader
+    // for user config and inline minification. So we need to dedupe baesd on
+    // path AND query to be safe.
+    const seen = new Map()
+    const loaderStrings = []
+
+    loaders.forEach(loader => {
+      const identifier = typeof loader === 'string'
+        ? loader
+        : (loader.path + loader.query)
+      const request = typeof loader === 'string' ? loader : loader.request
+      if (!seen.has(identifier)) {
+        seen.set(identifier, true)
+        // loader.request contains both the resolved loader path and its options
+        // query (e.g. ??ref-0)
+        loaderStrings.push(request)
+      }
+    })
+
+    return loaderUtils.stringifyRequest(this, '-!' + [
+      ...loaderStrings,
+      this.resourcePath + this.resourceQuery
+    ].join('!'))
+  }
+
+  // Inject style-post-loader before css-loader for scoped CSS and trimming
+  if (query.type === `style`) {
+    const cssLoaderIndex = loaders.findIndex(isCSSLoader)
+    if (cssLoaderIndex > -1) {
+      const afterLoaders = loaders.slice(0, cssLoaderIndex + 1)
+      const beforeLoaders = loaders.slice(cssLoaderIndex + 1)
+      const request = genRequest([
+        ...afterLoaders,
+        stylePostLoaderPath,
+        ...beforeLoaders
+      ])
+      // console.log(request)
+      return `import mod from ${request}; export default mod; export * from ${request}`
+    }
+  }
+
+  // for templates: inject the template compiler & optional cache
+  if (query.type === `template`) {
+    const path = require('path')
+    const cacheLoader = cacheDirectory && cacheIdentifier
+      ? [`cache-loader?${JSON.stringify({
+        // For some reason, webpack fails to generate consistent hash if we
+        // use absolute paths here, even though the path is only used in a
+        // comment. For now we have to ensure cacheDirectory is a relative path.
+        cacheDirectory: path.isAbsolute(cacheDirectory)
+          ? path.relative(process.cwd(), cacheDirectory)
+          : cacheDirectory,
+        cacheIdentifier: hash(cacheIdentifier) + '-vue-loader-template'
+      })}`]
+      : []
+    const request = genRequest([
+      ...cacheLoader,
+      templateLoaderPath + `??vue-loader-options`,
+      ...loaders
+    ])
+    // console.log(request)
+    // the template compiler uses esm exports
+    return `export * from ${request}`
+  }
+
+  // if a custom block has no other matching loader other than vue-loader itself,
+  // we should ignore it
+  if (query.type === `custom` &&
+      loaders.length === 1 &&
+      loaders[0].path === selfPath) {
+    return ``
+  }
+
+  // When the user defines a rule that has only resourceQuery but no test,
+  // both that rule and the cloned rule will match, resulting in duplicated
+  // loaders. Therefore it is necessary to perform a dedupe here.
+  const request = genRequest(loaders)
+  return `import mod from ${request}; export default mod; export * from ${request}`
+}