69   constructor(dataView, startIndex, length) {  argument
73     this.startIndex_ = startIndex;
75     this.endIndex_ = startIndex + length;
77     this.cursor_ = startIndex;
84   startIndex() {  method in BufferDecoder
286     const startIndex = this.cursor_;
289     checkCriticalPositionIndex(this.cursor_, startIndex + 10);
297   subBufferDecoder(startIndex, length) {  argument
299         startIndex >= this.startIndex(),
300         `Current start: ${this.startIndex()}, subBufferDecoder start: ${
301             startIndex}`);
304         startIndex + length <= this.endIndex(),
306             startIndex}, subBufferDecoder length: ${length}`);
307     return new BufferDecoder(this.dataView_, startIndex, length);