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Enable the ESLint prefer-const rule in the web/ directory

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Please find additional details about the ESLint rule at https://eslint.org/docs/rules/prefer-const

Note that this patch is generated automatically, by using the ESLint `--fix` argument, and will thus require some additional clean-up (which is done separately).
This commit is contained in:
Jonas Jenwald 2019-12-27 00:22:32 +01:00
parent 9c767e3875
commit 5d14e68bec
36 changed files with 367 additions and 367 deletions
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61
web/pdf_thumbnail_view.js
View file

@ -59,7 +59,7 @@ const TempImageFactory = (function TempImageFactoryClosure() {
tempCanvas.mozOpaque = true;
}
let ctx = tempCanvas.getContext("2d", { alpha: false });
const ctx = tempCanvas.getContext("2d", { alpha: false });
ctx.save();
ctx.fillStyle = "rgb(255, 255, 255)";
ctx.fillRect(0, 0, width, height);
@ -68,7 +68,7 @@ const TempImageFactory = (function TempImageFactoryClosure() {
},
destroyCanvas() {
let tempCanvas = tempCanvasCache;
const tempCanvas = tempCanvasCache;
if (tempCanvas) {
// Zeroing the width and height causes Firefox to release graphics
// resources immediately, which can greatly reduce memory consumption.
@ -123,7 +123,7 @@ class PDFThumbnailView {
this.l10n = l10n;
let anchor = document.createElement("a");
const anchor = document.createElement("a");
anchor.href = linkService.getAnchorUrl("#page=" + id);
this.l10n
.get("thumb_page_title", { page: id }, "Page {{page}}")
@ -136,14 +136,14 @@ class PDFThumbnailView {
};
this.anchor = anchor;
let div = document.createElement("div");
const div = document.createElement("div");
div.className = "thumbnail";
div.setAttribute("data-page-number", this.id);
this.div = div;
let ring = document.createElement("div");
const ring = document.createElement("div");
ring.className = "thumbnailSelectionRing";
let borderAdjustment = 2 * THUMBNAIL_CANVAS_BORDER_WIDTH;
const borderAdjustment = 2 * THUMBNAIL_CANVAS_BORDER_WIDTH;
ring.style.width = this.canvasWidth + borderAdjustment + "px";
ring.style.height = this.canvasHeight + borderAdjustment + "px";
this.ring = ring;
@ -156,7 +156,7 @@ class PDFThumbnailView {
setPdfPage(pdfPage) {
this.pdfPage = pdfPage;
this.pdfPageRotate = pdfPage.rotate;
let totalRotation = (this.rotation + this.pdfPageRotate) % 360;
const totalRotation = (this.rotation + this.pdfPageRotate) % 360;
this.viewport = pdfPage.getViewport({ scale: 1, rotation: totalRotation });
this.reset();
}
@ -173,12 +173,12 @@ class PDFThumbnailView {
this.scale = this.canvasWidth / this.pageWidth;
this.div.removeAttribute("data-loaded");
let ring = this.ring;
let childNodes = ring.childNodes;
const ring = this.ring;
const childNodes = ring.childNodes;
for (let i = childNodes.length - 1; i >= 0; i--) {
ring.removeChild(childNodes[i]);
}
let borderAdjustment = 2 * THUMBNAIL_CANVAS_BORDER_WIDTH;
const borderAdjustment = 2 * THUMBNAIL_CANVAS_BORDER_WIDTH;
ring.style.width = this.canvasWidth + borderAdjustment + "px";
ring.style.height = this.canvasHeight + borderAdjustment + "px";
@ -199,7 +199,7 @@ class PDFThumbnailView {
if (typeof rotation !== "undefined") {
this.rotation = rotation;
}
let totalRotation = (this.rotation + this.pdfPageRotate) % 360;
const totalRotation = (this.rotation + this.pdfPageRotate) % 360;
this.viewport = this.viewport.clone({
scale: 1,
rotation: totalRotation,
@ -223,7 +223,7 @@ class PDFThumbnailView {
* @private
*/
_getPageDrawContext(noCtxScale = false) {
let canvas = document.createElement("canvas");
const canvas = document.createElement("canvas");
// Keep the no-thumbnail outline visible, i.e. `data-loaded === false`,
// until rendering/image conversion is complete, to avoid display issues.
this.canvas = canvas;
@ -234,8 +234,8 @@ class PDFThumbnailView {
) {
canvas.mozOpaque = true;
}
let ctx = canvas.getContext("2d", { alpha: false });
let outputScale = getOutputScale(ctx);
const ctx = canvas.getContext("2d", { alpha: false });
const outputScale = getOutputScale(ctx);
canvas.width = (this.canvasWidth * outputScale.sx) | 0;
canvas.height = (this.canvasHeight * outputScale.sy) | 0;
@ -258,8 +258,8 @@ class PDFThumbnailView {
if (this.renderingState !== RenderingStates.FINISHED) {
return;
}
let id = this.renderingId;
let className = "thumbnailImage";
const id = this.renderingId;
const className = "thumbnailImage";
if (this.disableCanvasToImageConversion) {
this.canvas.id = id;
@ -278,7 +278,7 @@ class PDFThumbnailView {
this.ring.appendChild(this.canvas);
return;
}
let image = document.createElement("img");
const image = document.createElement("img");
image.id = id;
image.className = className;
this.l10n
@ -314,8 +314,8 @@ class PDFThumbnailView {
}
this.renderingState = RenderingStates.RUNNING;
let renderCapability = createPromiseCapability();
let finishRenderTask = error => {
const renderCapability = createPromiseCapability();
const finishRenderTask = error => {
// The renderTask may have been replaced by a new one, so only remove
// the reference to the renderTask if it matches the one that is
// triggering this callback.
@ -338,9 +338,9 @@ class PDFThumbnailView {
}
};
let ctx = this._getPageDrawContext();
let drawViewport = this.viewport.clone({ scale: this.scale });
let renderContinueCallback = cont => {
const ctx = this._getPageDrawContext();
const drawViewport = this.viewport.clone({ scale: this.scale });
const renderContinueCallback = cont => {
if (!this.renderingQueue.isHighestPriority(this)) {
this.renderingState = RenderingStates.PAUSED;
this.resume = () => {
@ -352,11 +352,11 @@ class PDFThumbnailView {
cont();
};
let renderContext = {
const renderContext = {
canvasContext: ctx,
viewport: drawViewport,
};
let renderTask = (this.renderTask = this.pdfPage.render(renderContext));
const renderTask = (this.renderTask = this.pdfPage.render(renderContext));
renderTask.onContinue = renderContinueCallback;
renderTask.promise.then(
@ -374,7 +374,7 @@ class PDFThumbnailView {
if (this.renderingState !== RenderingStates.INITIAL) {
return;
}
let img = pageView.canvas;
const img = pageView.canvas;
if (!img) {
return;
}
@ -384,8 +384,8 @@ class PDFThumbnailView {
this.renderingState = RenderingStates.FINISHED;
let ctx = this._getPageDrawContext(true);
let canvas = ctx.canvas;
const ctx = this._getPageDrawContext(true);
const canvas = ctx.canvas;
if (img.width <= 2 * canvas.width) {
ctx.drawImage(
img,
@ -405,8 +405,11 @@ class PDFThumbnailView {
// drawImage does an awful job of rescaling the image, doing it gradually.
let reducedWidth = canvas.width << MAX_NUM_SCALING_STEPS;
let reducedHeight = canvas.height << MAX_NUM_SCALING_STEPS;
let reducedImage = TempImageFactory.getCanvas(reducedWidth, reducedHeight);
let reducedImageCtx = reducedImage.getContext("2d");
const reducedImage = TempImageFactory.getCanvas(
reducedWidth,
reducedHeight
);
const reducedImageCtx = reducedImage.getContext("2d");
while (reducedWidth > img.width || reducedHeight > img.height) {
reducedWidth >>= 1;