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Prefer instanceof Dict rather than calling isDict() with one argument

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Unless you actually need to check that something is both a `Dict` and also of the *correct* type, using `instanceof Dict` directly should be a tiny bit more efficient since it avoids one function call and an unnecessary `undefined` check.

This patch uses ESLint to enforce this, since we obviously still want to keep the `isDict` helper function for where it makes sense.
This commit is contained in:
Jonas Jenwald 2022-02-21 12:44:56 +01:00
parent 67b658e8d5
commit 4df82ad31e
18 changed files with 83 additions and 93 deletions
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4
src/core/jbig2_stream.js
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@ -15,7 +15,7 @@
import { BaseStream } from "./base_stream.js";
import { DecodeStream } from "./decode_stream.js";
import { isDict } from "./primitives.js";
import { Dict } from "./primitives.js";
import { Jbig2Image } from "./jbig2.js";
import { shadow } from "../shared/util.js";
@ -50,7 +50,7 @@ class Jbig2Stream extends DecodeStream {
const jbig2Image = new Jbig2Image();
const chunks = [];
if (isDict(this.params)) {
if (this.params instanceof Dict) {
const globalsStream = this.params.get("JBIG2Globals");
if (globalsStream instanceof BaseStream) {
const globals = globalsStream.getBytes();