first commit

node_modules/@dcloudio/vue-cli-plugin-uni/packages/webpack-errors-plugin/index.js

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+
+const UniAppErrorsWebpackPlugin = require('./webpack-errors-plugin')
+
+module.exports = UniAppErrorsWebpackPlugin

node_modules/@dcloudio/vue-cli-plugin-uni/packages/webpack-errors-plugin/utils.js

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+/**
+ * Dedupes array based on criterion returned from iteratee function.
+ * Ex: uniqueBy(
+ *     [{ id: 1 }, { id: 1 }, { id: 2 }],
+ *     val => val.id
+ * ) = [{ id: 1 }, { id: 2 }]
+ */
+function uniqueBy (arr, fun) {
+  const seen = {}
+  return arr.filter(el => {
+    const e = fun(el)
+    return !(e in seen) && (seen[e] = 1)
+  })
+}
+
+module.exports = {
+  uniqueBy: uniqueBy
+}

node_modules/@dcloudio/vue-cli-plugin-uni/packages/webpack-errors-plugin/webpack-errors-plugin.js

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+const utils = require('./utils')
+
+const uniqueBy = utils.uniqueBy
+
+class WebpackErrorsPlugin {
+  constructor (options) {
+    options = options || {}
+    this.sourceRoot = options.sourceRoot
+    this.onErrors = options.onErrors
+    this.onWarnings = options.onWarnings
+  }
+
+  apply (compiler) {
+    const doneFn = stats => {
+      const hasErrors = stats.hasErrors()
+      const hasWarnings = stats.hasWarnings()
+
+      if (hasErrors && this.onErrors) {
+        this.onErrors(extractErrorsFromStats(stats, 'errors'))
+        return
+      }
+
+      if (hasWarnings && this.onWarnings) {
+        this.onWarnings(extractErrorsFromStats(stats, 'warnings'))
+      }
+    }
+
+    if (compiler.hooks) {
+      const plugin = {
+        name: 'UniAppErrorsWebpackPlugin'
+      }
+      compiler.hooks.done.tap(plugin, doneFn)
+    } else {
+      compiler.plugin('done', doneFn)
+    }
+  }
+}
+
+function extractErrorsFromStats (stats, type) {
+  if (isMultiStats(stats)) {
+    const errors = stats.stats
+      .reduce((errors, stats) => errors.concat(extractErrorsFromStats(stats, type)), [])
+    // Dedupe to avoid showing the same error many times when multiple
+    // compilers depend on the same module.
+    return uniqueBy(errors, error => error.message)
+  }
+  return stats.compilation[type]
+}
+
+function isMultiStats (stats) {
+  return stats.stats
+}
+
+module.exports = WebpackErrorsPlugin