How can I declare a function parameter of type UInt8Array in TypeScript?
import * as fs from "fs";
fs.readFile(fileName, (err: string, data: UInt8Array) => {
if (err) {
return console.error(err);
}
console.log("file text: " + data.toString());
});
I encountered an issue:
Error TS2304: Cannot find name 'UInt8Array'
Appreciate the help!
It seems you have a typo in your code, as indicated by the error message:
Error TS2304: 'UInt8Array' is not defined
The error message is complaining about UInt8Array. The correct name you should be using is most likely Uint8Array, with a lowercase i.
Here are some examples of instantiations that are compatible with TypeScript 1.6 (the latest stable version at the time of writing):
let example1 = new Uint8Array([1, 2, 3, 4]);
let example2 = new Int8Array([1, 2, 3, 4]);
let example3 = new Uint8Array([1, 2, 3, 4]);
let example4 = new Uint8ClampedArray([1, 2, 3, 4]);
let example5 = new Int16Array([1, 2, 3, 4]);
let example6 = new Uint16Array([1, 2, 3, 4]);
let example7 = new Int32Array([1, 2, 3, 4]);
let example8 = new Uint32Array([1, 2, 3, 4]);
let example9 = new Float32Array([1.5, 2.5, 3.5, 4.5]);
let example10 = new Float64Array([1.5, 2.5, 3.5, 4.5]);
let arrayBuffer = new ArrayBuffer(16);
How to Declare TypedArray with ArrayLike in TypeScript?
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