gulp-svgmin/dist/get-svgo-config.js

Minify SVG files with gulp.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getSvgoConfig = void 0;

var _lodash = _interopRequireDefault(require("lodash.clonedeep"));

var _svgo = require("svgo");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

// To prevent multiple scans of the disk for a svgo.config.js file, keep its
// data in module scope.
const cache = {}; // Load the config from svgo.config.js.

const loadConfigFromCache = async (configFile, cwd) => {
  if (configFile !== null) {
    // Look for the config in the specified file. loadConfig() will
    // require() the file, which caches it for us.
    return (0, _svgo.loadConfig)(configFile, cwd);
  } // Since no configFile was given, let loadConfig() find a file for us.
  // If the config file is not in our module cache, look for it on disk.


  if (!(cwd in cache)) {
    // Any usage of loadConfig() with the same cwd will return the same
    // file's config. Store the resulting config in our module cache.
    cache[cwd] = await (0, _svgo.loadConfig)(null, cwd);
  }

  return cache[cwd];
};

const getSvgoConfig = async function (options = null, doDeepClone = false) {
  // Construct the svgo config from the given options.
  let config = { ...options
  }; // Get the options that are for this gulp plugin and not for svgo.

  const pluginOptions = {
    full: Boolean(config.full),
    configFile: config.configFile || null,
    cwd: config.cwd || process.cwd()
  };
  delete config.full;
  delete config.configFile;
  delete config.cwd; // If the options.full flag is specified, then the given options are
  // considered to be the full svgo config.

  if (pluginOptions.full) {
    return config;
  } // Extract the svgo plugins list from the config as we will need to handle
  // them specially later.


  const plugins = config.plugins || [];
  delete config.plugins;
  const loadedConfig = await loadConfigFromCache(pluginOptions.configFile, pluginOptions.cwd); // Merge the given config with the config loaded from file. (If no
  // config file was found, svgo's loadConfig() returns null.)

  if (loadedConfig) {
    config = { // Since gulp-svgmin allows a function to modify config per-file, we
      // want to prevent that function from making modifications to the
      // returned config object that would bleed into subsequent usages of
      // the config object.
      ...(doDeepClone ? (0, _lodash.default)(loadedConfig) : loadedConfig),
      ...config
    };
  } // Merge any plugins given in options.plugins.


  if (config.plugins) {
    // If plugins are provided in a config file, they are assumed to be
    // a final list of plugins; according to svgo version 2 docs, the
    // config file is responsible for merging the default plugins list.
    // So we just need to merge the options.plugins into the list loaded
    // from the config file.
    config.plugins = extendLoadedPlugins(config.plugins, plugins);
  } else {
    const pluginConfig = {
      // Default provided per svgo docs in v2.4.0+
      name: 'preset-default',
      params: {
        overrides: {}
      }
    }; // Following format assuming plugins settings are for built ins

    for (const plugin of plugins) {
      for (const [key, value] of Object.entries(plugin)) {
        pluginConfig.params.overrides[key] = value;
      }
    }

    config.plugins = [pluginConfig];
  }

  return config;
}; // Based on svgo's extendDefaultPlugins().


exports.getSvgoConfig = getSvgoConfig;

const extendLoadedPlugins = (loadedPlugins, plugins) => {
  const pluginsOrder = [];
  const extendedPlugins = loadedPlugins.map(plugin => {
    pluginsOrder.push(typeof plugin === 'string' ? plugin : plugin.name);
    return plugin;
  });

  for (const plugin of plugins) {
    const index = pluginsOrder.indexOf(typeof plugin === 'string' ? plugin : plugin.name);

    if (index === -1) {
      extendedPlugins.push(plugin);
    } else {
      extendedPlugins[index] = plugin;
    }
  }

  return extendedPlugins;
};