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Use more for...of loops in the code-base

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Most, if not all, of this code is old enough to predate the general availability of `for...of` iteration.
This commit is contained in:
Jonas Jenwald 2022-10-03 12:33:49 +02:00
parent 4e58dabb32
commit 60f6272ed9
16 changed files with 70 additions and 101 deletions
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13
src/core/jpg.js
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@ -774,8 +774,7 @@ class JpegImage {
function prepareComponents(frame) {
const mcusPerLine = Math.ceil(frame.samplesPerLine / 8 / frame.maxH);
const mcusPerColumn = Math.ceil(frame.scanLines / 8 / frame.maxV);
for (let i = 0, ii = frame.components.length; i < ii; i++) {
const component = frame.components[i];
for (const component of frame.components) {
const blocksPerLine = Math.ceil(
(Math.ceil(frame.samplesPerLine / 8) * component.h) / frame.maxH
);
@ -1080,9 +1079,7 @@ class JpegImage {
this.jfif = jfif;
this.adobe = adobe;
this.components = [];
for (let i = 0, ii = frame.components.length; i < ii; i++) {
const component = frame.components[i];
for (const component of frame.components) {
// Prevent errors when DQT markers are placed after SOF{n} markers,
// by assigning the `quantizationTable` entry after the entire image
// has been parsed (fixes issue7406.pdf).
@ -1391,11 +1388,9 @@ class JpegImage {
const data = this._getLinearizedBlockData(width, height, isSourcePDF);
if (this.numComponents === 1 && forceRGB) {
const dataLength = data.length;
const rgbData = new Uint8ClampedArray(dataLength * 3);
const rgbData = new Uint8ClampedArray(data.length * 3);
let offset = 0;
for (let i = 0; i < dataLength; i++) {
const grayColor = data[i];
for (const grayColor of data) {
rgbData[offset++] = grayColor;
rgbData[offset++] = grayColor;
rgbData[offset++] = grayColor;