How to use the @tanker/file-reader function in @tanker/file-reader
To help you get started, we’ve selected a few @tanker/file-reader examples, based on popular ways it is used in public projects.
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TankerHQ / sdk-js / packages / types / src / data-types.js View on Github 
const toUint8Array = async (value: Data, maxBytes: ?number): Promise => {
if (value instanceof Uint8Array) // also matches Buffer instances
return value;
if (value instanceof ArrayBuffer)
return new Uint8Array(value);
const reader = new FileReader(value);
const buffer = await reader.readAsArrayBuffer(maxBytes || value.size);
return new Uint8Array(buffer);
};_initFileMode = (source: Blob | File) => {
this._mode = 'file';
this._source = source;
this._fileReader = new FileReader(source);
}const toUint8Array = async (value: Data, maxSize: ?number): Promise => {
if (value instanceof Uint8Array)
return value;
if (value instanceof ArrayBuffer)
return new Uint8Array(value);
const reader = new FileReader(value);
const buffer = await reader.readAsArrayBuffer(maxSize || value.size);
return new Uint8Array(buffer);
};@tanker/file-reader
A promisified FileReader for browsers
