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function isBrowser() {
return typeof window !== 'undefined';
}
function isNode() {
return typeof window === 'undefined';
}
function nodeBufferToArrayBuffer(buffer) {
const ab = new ArrayBuffer(buffer.length);
const view = new Uint8Array(ab);
for (let i = 0; i < buffer.length; ++i) {
view[i] = buffer[i];
}
return ab;
}
function arrayBufferToNodeBuffer(ab) {
const buffer = new Buffer(ab.byteLength);
const view = new Uint8Array(ab);
for (let i = 0; i < buffer.length; ++i) {
buffer[i] = view[i];
}
return buffer;
}
function checkArgument(expression, message) {
if (!expression) {
throw message;
}
}
export { isBrowser, isNode, nodeBufferToArrayBuffer, arrayBufferToNodeBuffer, checkArgument };