Prepack experiment index.js

index.js

import reduce from "ramda/src/reduce";
import keys from "ramda/src/keys";

const log = function(target) {
  return function(level) {
    return function(message) {
      return target[level](message);
    };
  };
};

class Logger {
  constructor(target) {
    this.LOG_STATUS_FLAGS = reduce(
      (p, v) => Object.assign({}, p, { [v]: v }),
      {},
      [
          "ERROR", 
          "WARN", 
          "INFO", 
          "DEBUG", 
          "SILLY"
      ].map(x => x.toLowerCase())
    );
    this.target = target;
    reduce(
      (p, v) => Object.assign(p, { [v]: log(this.target)(v) }),
      this,
      keys(this.LOG_STATUS_FLAGS)
    );
  }
}

module.exports = Object.assign({}, new Logger(console));