Method parseLine

github-actions/browserstack/set-browserstack-env.js:18824–18870

* @param {Buffer} line * @param {EventStreamEvent} event

(line, event)

          }
          if (this.buffer) {
            this.buffer = Buffer.concat([this.buffer, chunk]);
          } else {
            this.buffer = chunk;
          }
          if (this.checkBOM) {
            switch (this.buffer.length) {
              case 1:
                if (this.buffer[0] === BOM[0]) {
                  callback();
                  return;
                }
                this.checkBOM = false;
                callback();
                return;
              case 2:
                if (this.buffer[0] === BOM[0] && this.buffer[1] === BOM[1]) {
                  callback();
                  return;
                }
                this.checkBOM = false;
                break;
              case 3:
                if (this.buffer[0] === BOM[0] && this.buffer[1] === BOM[1] && this.buffer[2] === BOM[2]) {
                  this.buffer = Buffer.alloc(0);
                  this.checkBOM = false;
                  callback();
                  return;
                }
                this.checkBOM = false;
                break;
              default:
                if (this.buffer[0] === BOM[0] && this.buffer[1] === BOM[1] && this.buffer[2] === BOM[2]) {
                  this.buffer = this.buffer.subarray(3);
                }
                this.checkBOM = false;
                break;
            }
          }
          while (this.pos < this.buffer.length) {
            if (this.eventEndCheck) {
              if (this.crlfCheck) {
                if (this.buffer[this.pos] === LF) {
                  this.buffer = this.buffer.subarray(this.pos + 1);
                  this.pos = 0;
                  this.crlfCheck = false;
                  continue;
                }
                this.crlfCheck = false;
              }
              if (this.buffer[this.pos] === LF || this.buffer[this.pos] === CR) {