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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at
* The origin of this IDL file is
interface mixin TextEncoderCommon {
* This is DOMString in the spec, but the value is always ASCII
* and short. By declaring this as ByteString, we get the same
* end result (storage as inline Latin1 string in SpiderMonkey)
* with fewer conversions.
readonly attribute ByteString encoding;
dictionary TextEncoderEncodeIntoResult {
unsigned long long read;
unsigned long long written;
interface TextEncoder {
* This is spec-wise USVString but marking it as UTF8String as an
* optimization. (The SpiderMonkey-provided conversion to UTF-8 takes care of
* replacing lone surrogates with the REPLACEMENT CHARACTER, so the
* observable behavior of USVString is matched.)
[NewObject, Throws]
Uint8Array encode(optional UTF8String input = "");
* The same comment about UTF8String as above applies here with JSString.
* We use JSString because we don't want to encode the full string, just as
* much as the capacity of the Uint8Array.
TextEncoderEncodeIntoResult encodeInto(JSString source, Uint8Array destination);
TextEncoder includes TextEncoderCommon;