39 lines
897 B
JavaScript
39 lines
897 B
JavaScript
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// @ts-check
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/**
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* Convert a `Uint8Array` to a URL-safe base64 string.
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* @param {Uint8Array} bytes
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* @returns {string}
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*/
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export const stringify = (bytes) => {
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const string = String.fromCharCode(...bytes);
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const base64 = btoa(string);
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return base64
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.replaceAll("+", "-")
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.replaceAll("/", "_")
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.replaceAll("=", "");
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};
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/**
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* Convert a URL-safe base64 string to a `Uint8Array`.
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* Returns `null` if the string is invalid.
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* @param {string} text
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* @returns {null | Uint8Array}
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*/
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export const parse = (text) => {
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const normalizedText = text
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.replaceAll("-", "+")
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.replaceAll("_", "/")
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.replaceAll(" ", "+");
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try {
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const string = atob(normalizedText);
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const bytes = new Uint8Array(string.length);
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for (let i = 0; i < string.length; i++) {
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bytes[i] = string.charCodeAt(i);
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}
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return bytes;
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} catch (_err) {
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return null;
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}
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};
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