index.js

/*
 MIT License http://www.opensource.org/licenses/mit-license.php
 Author Tobias Koppers @sokra
 */
var loaderUtils = require("loader-utils");
var validateOptions = require("schema-utils");

var FS = require("fs");
var mime = require("mime");

module.exports = function (content) {
  this.cacheable && this.cacheable();

  var options = loaderUtils.getOptions(this) || {};

  validateOptions(require("./options"), options, "URL Loader")
  // Options `dataUrlLimit` is backward compatibility with first loader versions
  var limit = options.limit || (this.options && this.options.url && this.options.url.dataUrlLimit);

  if (limit) {
    limit = parseInt(limit, 10);
  }

  var replace = options.replace || [];
  replace.forEach(function (params) {
    if (params.test && params.path && FS.existsSync(params.path)) {
      content = FS.readFileSync(params.path);
      this.resourcePath = params.path;
    }
  })

  var mimetype = options.mimetype || options.minetype || mime.lookup(this.resourcePath);
  // No limits or limit more than content length
  if (!limit || content.length < limit) {
    if (typeof content === "string") {
      content = new Buffer(content);
    }

    return "module.exports = " + JSON.stringify("data:" + (mimetype ? mimetype + ";" : "") + "base64," + content.toString("base64"));
  }

  var fallback = options.fallback || "file-loader";
  var fallbackLoader = require(fallback);

  return fallbackLoader.call(this, content);
}

module.exports.raw = true;