Method optimizeReference

javascript/src/serializer.js:543–551

* @param {string} ref * @return {string}

(ref)

   * @return {string}
   */
  optimizeReference(ref) {
    if (ref in this.referenceMap) {
      return this.referenceMap[ref];
    }
    const mappedRef = String(this.nextMappedRef++);
    this.referenceMap[ref] = mappedRef;
    this.optimizedValues[mappedRef] = this.optimizeValue(this.values[ref], 0);
    return mappedRef;
  }

  /**
   * @param {!ee.api.ValueNode} value