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/**
* @param {string} text
* @returns {ArrayBufferLike}
*/
export function b64_decode(text) {
const d = atob(text);
const u8 = new Uint8Array(d.length);
for (let i = 0; i < d.length; i++) {
u8[i] = d.charCodeAt(i);
}
return u8.buffer;
}
/**
* @param {ArrayBuffer} buffer
* @returns {string}
*/
export function b64_encode(buffer) {
if (globalThis.Buffer) {
return Buffer.from(buffer).toString('base64');
}
const little_endian = new Uint8Array(new Uint16Array([1]).buffer)[0] > 0;
// The Uint16Array(Uint8Array(...)) ensures the code points are padded with 0's
return btoa(
new TextDecoder(little_endian ? 'utf-16le' : 'utf-16be').decode(
new Uint16Array(new Uint8Array(buffer))
)
);
}
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