src/vs/base/common/buffer.ts/VSBuffer/toString
class VSBuffer:	toString(): string {
		if (hasBuffer) {
			return this.buffer.toString();
		} else if (hasTextDecoder) {
			if (!textDecoder) {
				textDecoder = new TextDecoder();
			}
			return textDecoder.decode(this.buffer);
		} else {
			return strings.decodeUTF8(this.buffer);
		}
	}