npm and error messages

node_modules/friendly-errors-webpack-plugin/src/formatters/defaultError.js

@@ -0,0 +1,43 @@
+'use strict';
+
+const concat = require('../utils').concat;
+const formatTitle = require('../utils/colors').formatTitle;
+
+function displayError(severity, error) {
+  const baseError = formatTitle(severity, severity);
+
+  return concat(
+    `${baseError} ${removeLoaders(error.file)}`,
+    '',
+    error.message,
+    (error.origin ? error.origin : undefined),
+    '',
+    error.infos
+  );
+}
+
+function removeLoaders(file) {
+  if (!file) {
+    return "";
+  }
+  const split = file.split('!');
+  const filePath = split[split.length - 1];
+  return `in ${filePath}`;
+}
+
+function isDefaultError(error) {
+  return !error.type;
+}
+
+/**
+ * Format errors without a type
+ */
+function format(errors, type) {
+  return errors
+    .filter(isDefaultError)
+    .reduce((accum, error) => (
+      accum.concat(displayError(type, error))
+    ), []);
+}
+
+module.exports = format;