Method parseQueryParam

packages/router/src/url_tree.ts:730–760

(params: Params)

  // Parse a single query parameter `name[=value]`
  private parseQueryParam(params: Params): void {
    const key = matchQueryParams(this.remaining);
    if (!key) {
      return;
    }
    this.capture(key);
    let value: any = '';
    if (this.consumeOptional('=')) {
      const valueMatch = matchUrlQueryParamValue(this.remaining);
      if (valueMatch) {
        value = valueMatch;
        this.capture(value);
      }
    }

    const decodedKey = decodeQuery(key);
    const decodedVal = decodeQuery(value);

    if (params.hasOwnProperty(decodedKey)) {
      // Append to existing values
      let currentVal = params[decodedKey];
      if (!Array.isArray(currentVal)) {
        currentVal = [currentVal];
        params[decodedKey] = currentVal;
      }
      currentVal.push(decodedVal);
    } else {
      // Create a new value
      params[decodedKey] = decodedVal;
    }
  }

  // parse `(a/b//outlet_name:c/d)`
  private parseParens(allowPrimary: boolean, depth: number): {[outlet: string]: UrlSegmentGroup} {