gristlabs_grist-core/app/common/arrayToString.ts

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/**
* Functions to convert between an array of bytes and a string. The implementations are
* different for Node and for the browser.
*/
declare const TextDecoder: any, TextEncoder: any;
export let arrayToString: (data: Uint8Array) => string;
export let stringToArray: (data: string) => Uint8Array;
if (typeof TextDecoder !== 'undefined') {
// Note that constructing a TextEncoder/Decoder takes time, so it's faster to reuse.
const dec = new TextDecoder('utf8');
const enc = new TextEncoder('utf8');
arrayToString = function(uint8Array: Uint8Array): string {
return dec.decode(uint8Array);
};
stringToArray = function(str: string): Uint8Array {
return enc.encode(str);
};
} else {
arrayToString = function(uint8Array: Uint8Array): string {
return Buffer.from(uint8Array).toString('utf8');
};
stringToArray = function(str: string): Uint8Array {
return new Uint8Array(Buffer.from(str, 'utf8'));
};
}