tus-js-client-stall-detection/lib.esm/sources/ArrayBufferViewFileSource.js

A pure JavaScript client for the tus resumable upload protocol

/**
 * ArrayBufferViewFileSource implements FileSource for ArrayBufferView instances
 * (e.g. TypedArry or DataView).
 *
 * Note that the underlying ArrayBuffer should not change once passed to tus-js-client
 * or it will lead to weird behavior.
 */
export class ArrayBufferViewFileSource {
    constructor(view) {
        this._view = view;
        this.size = view.byteLength;
    }
    slice(start, end) {
        const buffer = this._view.buffer;
        const startInBuffer = this._view.byteOffset + start;
        end = Math.min(end, this.size); // ensure end is finite and not greater than size
        const byteLength = end - start;
        // Use DataView instead of ArrayBuffer.slice to avoid copying the buffer.
        const value = new DataView(buffer, startInBuffer, byteLength);
        const size = value.byteLength;
        const done = end >= this.size;
        return Promise.resolve({ value, size, done });
    }
    close() {
        // Nothing to do here since we don't need to release any resources.
    }
}
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