Fix typos

examples/learning/prevnext.html

@@ -30,7 +30,7 @@ <h1>'Previous/Next' example</h1>
 
   //
   // In cases when the pdf.worker.js is located at the different folder than the
-  // pdf.js's one, or the pdf.js is executed via eval(), the workerSrc property
+  // PDF.js's one, or the PDF.js is executed via eval(), the workerSrc property
   // shall be specified.
   //
   pdfjsLib.GlobalWorkerOptions.workerSrc =

extensions/firefox/tools/l10n.js

@@ -1,6 +1,6 @@
 "use strict";
 
-// Small subset of the webL10n API by Fabien Cazenave for pdf.js extension.
+// Small subset of the webL10n API by Fabien Cazenave for PDF.js extension.
 (function(window) {
   var gLanguage = "";
   var gExternalLocalizerServices = null;

external/builder/preprocessor2.js

@@ -168,7 +168,7 @@ function postprocessNode(ctx, node) {
       if (node.callee.type === 'MemberExpression' &&
           isPDFJSPreprocessor(node.callee.object) &&
           node.callee.property.type === 'Identifier') {
-        // PDFJSDev.xxxx(arg1, arg2, ...) => tranform
+        // PDFJSDev.xxxx(arg1, arg2, ...) => transform
         var action = node.callee.property.name;
         return handlePreprocessorAction(ctx, action,
                                         node.arguments, node.loc);

external/cmapscompress/README.md

@@ -1,6 +1,6 @@
 # Quick notes about binary CMap format (bcmap)
 
-The format is designed to package some information from the CMap files located at external/cmap. Please notice for size optimization reasons, the original information blocks can be changed (split or joined) and items in the blocks can be swaped.
+The format is designed to package some information from the CMap files located at external/cmap. Please notice for size optimization reasons, the original information blocks can be changed (split or joined) and items in the blocks can be swapped.
 
 The data stored in binary format in network byte order (big-endian).
 
@@ -34,7 +34,7 @@ Then records follow. The records starts from the record header encoded as B, whe
 ## Metadata record
 
 The metadata record header bit 4-0 contain id of the metadata:
-  - 0 – comment, body of the record is encoded comment string (S) 
+  - 0 – comment, body of the record is encoded comment string (S)
   - 1 – UseCMap, body of the record is usecmap id string (S)
 
 ## Data records

external/webL10n/l10n.js

@@ -145,10 +145,10 @@ document.webL10n = (function(window, document, undefined) {
    *    locale (language) to parse. Must be a lowercase string.
    *
    * @param {Function} successCallback
-   *    triggered when the l10n resource has been successully parsed.
+   *    triggered when the l10n resource has been successfully parsed.
    *
    * @param {Function} failureCallback
-   *    triggered when the an error has occured.
+   *    triggered when the an error has occurred.
    *
    * @return {void}
    *    uses the following global variables: gL10nData, gTextData, gTextProp.

src/core/cmap.js

@@ -853,7 +853,7 @@ var CMapFactory = (function CMapFactoryClosure() {
 
   function parseCMap(cMap, lexer, fetchBuiltInCMap, useCMap) {
     var previous;
-    var embededUseCMap;
+    var embeddedUseCMap;
     objLoop: while (true) {
       try {
         var obj = lexer.getObj();
@@ -872,7 +872,7 @@ var CMapFactory = (function CMapFactoryClosure() {
               break objLoop;
             case 'usecmap':
               if (isName(previous)) {
-                embededUseCMap = previous.name;
+                embeddedUseCMap = previous.name;
               }
               break;
             case 'begincodespacerange':
@@ -901,10 +901,10 @@ var CMapFactory = (function CMapFactoryClosure() {
       }
     }
 
-    if (!useCMap && embededUseCMap) {
-      // Load the usecmap definition from the file only if there wasn't one
+    if (!useCMap && embeddedUseCMap) {
+      // Load the useCMap definition from the file only if there wasn't one
       // specified.
-      useCMap = embededUseCMap;
+      useCMap = embeddedUseCMap;
     }
     if (useCMap) {
       return extendCMap(cMap, fetchBuiltInCMap, useCMap);

src/core/fonts.js

@@ -47,7 +47,7 @@ var SKIP_PRIVATE_USE_RANGE_F000_TO_F01F = false;
 // except for Type 3 fonts
 var PDF_GLYPH_SPACE_UNITS = 1000;
 
-// Accented charactars are not displayed properly on Windows, using this flag
+// Accented characters are not displayed properly on Windows, using this flag
 // to control analysis of seac charstrings.
 var SEAC_ANALYSIS_ENABLED = false;
 
@@ -2107,7 +2107,7 @@ var Font = (function FontClosure() {
             }
           } else if (op === 0x2B && !tooComplexToFollowFunctions) { // CALL
             if (!inFDEF && !inELSE) {
-              // collecting inforamtion about which functions are used
+              // collecting information about which functions are used
               funcId = stack[stack.length - 1];
               ttContext.functionsUsed[funcId] = true;
               if (funcId in ttContext.functionsStackDeltas) {
@@ -2132,7 +2132,7 @@ var Font = (function FontClosure() {
               tooComplexToFollowFunctions = true;
             }
             inFDEF = true;
-            // collecting inforamtion about which functions are defined
+            // collecting information about which functions are defined
             lastDeff = i;
             funcId = stack.pop();
             ttContext.functionsDefined[funcId] = { data, i, };

src/core/jpx.js

@@ -313,7 +313,7 @@ var JpxImage = (function JpxImageClosure() {
               cod.selectiveArithmeticCodingBypass = !!(blockStyle & 1);
               cod.resetContextProbabilities = !!(blockStyle & 2);
               cod.terminationOnEachCodingPass = !!(blockStyle & 4);
-              cod.verticalyStripe = !!(blockStyle & 8);
+              cod.verticallyStripe = !!(blockStyle & 8);
               cod.predictableTermination = !!(blockStyle & 16);
               cod.segmentationSymbolUsed = !!(blockStyle & 32);
               cod.reversibleTransformation = data[j++];
@@ -338,8 +338,8 @@ var JpxImage = (function JpxImageClosure() {
               if (cod.terminationOnEachCodingPass) {
                 unsupported.push('terminationOnEachCodingPass');
               }
-              if (cod.verticalyStripe) {
-                unsupported.push('verticalyStripe');
+              if (cod.verticallyStripe) {
+                unsupported.push('verticallyStripe');
               }
               if (cod.predictableTermination) {
                 unsupported.push('predictableTermination');

src/core/obj.js

@@ -1197,7 +1197,7 @@ var XRef = (function XRefClosure() {
             if (endobjRegExp.test(tokenStr)) {
               break;
             } else {
-              // Check if an "obj" occurance is actually a new object,
+              // Check if an "obj" occurrence is actually a new object,
               // i.e. the current object is missing the 'endobj' operator.
               let objToken = nestedObjRegExp.exec(tokenStr);
 

src/core/operator_list.js

@@ -444,15 +444,15 @@ var QueueOptimizer = (function QueueOptimizerClosure() {
       let match = this.match;
       if (!state && !match && (i + 1 === ii) && !InitialState[fnArray[i]]) {
         // Micro-optimization for the common case: last item is not
-        // optimazable, just skipping it.
+        // optimizable, just skipping it.
         this.lastProcessed = ii;
         return;
       }
 
       const context = this.context;
       while (i < ii) {
         if (match) {
-          // Already find a block of potetially optimizable items, iterating...
+          // Already find a block of potentially optimizable items, iterating...
           const iterate = (0, match.iterateFn)(context, i);
           if (iterate) {
             i++;
@@ -467,7 +467,7 @@ var QueueOptimizer = (function QueueOptimizerClosure() {
             break;
           }
         }
-        // Find the potetially optimizable items.
+        // Find the potentially optimizable items.
         state = (state || InitialState)[fnArray[i]];
         if (!state || Array.isArray(state)) {
           i++;

src/core/pattern.js

@@ -142,7 +142,7 @@ Shadings.RadialAxial = (function RadialAxialClosure() {
 
     var colorStops = this.colorStops = [];
 
-    // Protect against bad domains so we don't end up in an infinte loop below.
+    // Protect against bad domains so we don't end up in an infinite loop below.
     if (t0 >= t1 || step <= 0) {
       // Acrobat doesn't seem to handle these cases so we'll ignore for
       // now.

src/display/canvas.js

@@ -212,7 +212,7 @@ function compileType3Glyph(imgData) {
     }
   }
 
-  // finding iteresting points: every point is located between mask pixels,
+  // finding interesting points: every point is located between mask pixels,
   // so there will be points of the (width + 1)x(height + 1) grid. Every point
   // will have flags assigned based on neighboring mask pixels:
   //   4 | 8

src/display/content_disposition.js

@@ -163,7 +163,7 @@ function getFilenameFromContentDispositionHeader(contentDisposition) {
     // Decodes "ext-value" from RFC 5987.
     let encodingend = extvalue.indexOf('\'');
     if (encodingend === -1) {
-      // Some servers send "filename*=" without encoding'language' prefix,
+      // Some servers send "filename*=" without encoding 'language' prefix,
       // e.g. in https://github.com/Rob--W/open-in-browser/issues/26
       // Let's accept the value like Firefox (57) (Chrome 62 rejects it).
       return extvalue;

src/display/text_layer.js

@@ -48,7 +48,7 @@ var renderTextLayer = (function renderTextLayerClosure() {
     return !NonWhitespaceRegexp.test(str);
   }
 
-  // Text layers may contain many thousand div's, and using `styleBuf` avoids
+  // Text layers may contain many thousands of divs, and using `styleBuf` avoids
   // creating many intermediate strings when building their 'style' properties.
   var styleBuf = ['left: ', 0, 'px; top: ', 0, 'px; font-size: ', 0,
                   'px; font-family: ', '', ';'];
@@ -340,7 +340,7 @@ var renderTextLayer = (function renderTextLayerClosure() {
         var xNew;
         if (affectedBoundary.x2 > boundary.x1) {
           // In the middle of the previous element, new x shall be at the
-          // boundary start. Extending if further if the affected bondary
+          // boundary start. Extending if further if the affected boundary
           // placed on top of the current one.
           xNew = affectedBoundary.index > boundary.index ?
             affectedBoundary.x1New : boundary.x1;

web/pdf_presentation_mode.js

@@ -35,7 +35,7 @@ const SWIPE_ANGLE_THRESHOLD = Math.PI / 6;
  * @property {HTMLDivElement} viewer - (optional) The viewer element.
  * @property {PDFViewer} pdfViewer - The document viewer.
  * @property {EventBus} eventBus - The application event bus.
- * @property {Array} contextMenuItems - (optional) The menuitems that are added
+ * @property {Array} contextMenuItems - (optional) The menu items that are added
  *   to the context menu in Presentation Mode.
  */
 

web/ui_utils.js

@@ -54,7 +54,7 @@ function formatL10nValue(text, args) {
 }
 
 /**
- * No-op implemetation of the localization service.
+ * No-op implementation of the localization service.
  * @implements {IL10n}
  */
 let NullL10n = {
@@ -483,7 +483,7 @@ function waitOnEventOrTimeout({ target, name, delay = 0, }) {
   if (typeof target !== 'object' || !(name && typeof name === 'string') ||
       !(Number.isInteger(delay) && delay >= 0)) {
     return Promise.reject(
-      new Error('waitOnEventOrTimeout - invalid paramaters.'));
+      new Error('waitOnEventOrTimeout - invalid parameters.'));
   }
   let capability = createPromiseCapability();