webpack-incremental-ident/src/config.js

Generate incremental class name for css loader

const fs = require("fs");

let allowedCharacters =
  "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_";
let blacklist = [];
let logPath = "";
let fallbackIdent = "";
const originalIdents = new Map();
const idents = new Map();
const revertedIdents = new Map();
const usedIdents = new Map();

function setupConfig(options) {
  allowedCharacters = options.characters || allowedCharacters;
  logPath = options.logPath;
  blacklist = options.blacklist || blacklist;
  fallbackIdent = options.fallbackIdent;
}

function getConfig() {
  return {
    allowedCharacters,
    blacklist,
    fallbackIdent,
  };
}

function importLog() {
  if (fs.existsSync(logPath)) {
    const data = require(logPath);

    Object.keys(data.idents).forEach(key => {
      originalIdents.set(key, data.idents[key]);
      idents.set(key, data.idents[key]);
      revertedIdents.set(data.idents[key], key);
    });
  }
}

function exportLog() {
  let jsonIdents = {};

  idents.forEach((value, key) => {
    if (usedIdents.has(key)) {
      jsonIdents[key] = value;
    }
  });
  fs.writeFileSync(logPath, JSON.stringify({ idents: jsonIdents }, null, 2));
}

module.exports = {
  setupConfig,
  importLog,
  exportLog,
  idents,
  originalIdents,
  revertedIdents,
  usedIdents,
  getConfig,
};