DefinitelyTyped/types/text-encoding/text-encoding-tests.ts

import { TextEncoder, TextDecoder } from "text-encoding";

function test_encoder() {
    var text = "plain text";
    var uint8array = new Uint8Array([]);

    // constructor
    uint8array = new TextEncoder().encode(text);
    uint8array = new TextEncoder("utf-8").encode(text);
    uint8array = new TextEncoder("windows-1252", {
        NONSTANDARD_allowLegacyEncoding: true
    }).encode(text);

    uint8array = TextEncoder().encode(text);
    uint8array = TextEncoder("utf-8").encode(text);
    uint8array = TextEncoder("windows-1252", {
        NONSTANDARD_allowLegacyEncoding: true
    }).encode(text);

    // attributes
    var encoder = new TextEncoder();
    var encoding: string = encoder.encoding;

    // methods
    encoder.encode();
    encoder.encode(text);
    encoder.encode(text, { stream: true });
}

function test_decoder() {
    var text = "plain text";
    var uint8array: Uint8Array = TextEncoder().encode(text);
    var arrayBuffer: ArrayBuffer = uint8array.buffer;

    // constructor
    text = new TextDecoder().decode(uint8array);
    text = new TextDecoder("utf-8").decode(uint8array);
    text = new TextDecoder("windows-1252", {}).decode(uint8array);
    text = new TextDecoder("windows-1252", { fatal: true }).decode(uint8array);
    text = new TextDecoder("windows-1252", { ignoreBOM: true }).decode(
        uint8array
    );

    text = TextDecoder().decode(uint8array);
    text = TextDecoder("utf-8").decode(uint8array);
    text = TextDecoder("windows-1252", {}).decode(uint8array);
    text = TextDecoder("windows-1252", { fatal: true }).decode(uint8array);
    text = TextDecoder("windows-1252", { ignoreBOM: true }).decode(uint8array);

    // attributes
    var decoder = new TextDecoder();

    var encoding: string = decoder.encoding;

    var fatal: boolean = decoder.fatal;

    var ignoreBOM: boolean = decoder.ignoreBOM;

    // methods
    decoder.decode();
    decoder.decode(uint8array);
    decoder.decode(arrayBuffer);
    decoder.decode(uint8array, { stream: true });
}