Ensure that all import and require statements, in the entire code…

…-base, have a `.js` file extension

In order to eventually get rid of SystemJS and start using native `import`s instead, we'll need to provide "complete" file identifiers since otherwise there'll be MIME type errors when attempting to use `import`.

src/core/annotation.js

@@ -27,13 +27,13 @@ import {
   stringToPDFString,
   Util,
   warn,
-} from "../shared/util";
-import { Catalog, FileSpec, ObjectLoader } from "./obj";
-import { Dict, isDict, isName, isRef, isStream } from "./primitives";
-import { ColorSpace } from "./colorspace";
-import { getInheritableProperty } from "./core_utils";
-import { OperatorList } from "./operator_list";
-import { Stream } from "./stream";
+} from "../shared/util.js";
+import { Catalog, FileSpec, ObjectLoader } from "./obj.js";
+import { Dict, isDict, isName, isRef, isStream } from "./primitives.js";
+import { ColorSpace } from "./colorspace.js";
+import { getInheritableProperty } from "./core_utils.js";
+import { OperatorList } from "./operator_list.js";
+import { Stream } from "./stream.js";
 
 class AnnotationFactory {
   /**

src/core/bidi.js

@@ -13,7 +13,7 @@
  * limitations under the License.
  */
 
-import { warn } from "../shared/util";
+import { warn } from "../shared/util.js";
 
 // Character types for symbols from 0000 to 00FF.
 // Source: ftp://ftp.unicode.org/Public/UNIDATA/UnicodeData.txt

src/core/ccitt.js

@@ -25,7 +25,7 @@
  *   or -1 when EOF is reached.
  */
 
-import { info } from "../shared/util";
+import { info } from "../shared/util.js";
 
 let CCITTFaxDecoder = (function CCITTFaxDecoder() {
   const ccittEOL = -2;

src/core/ccitt_stream.js

@@ -13,9 +13,9 @@
  * limitations under the License.
  */
 
-import { Dict, isDict } from "./primitives";
-import { CCITTFaxDecoder } from "./ccitt";
-import { DecodeStream } from "./stream";
+import { Dict, isDict } from "./primitives.js";
+import { CCITTFaxDecoder } from "./ccitt.js";
+import { DecodeStream } from "./stream.js";
 
 var CCITTFaxStream = (function CCITTFaxStreamClosure() {
   function CCITTFaxStream(str, maybeLength, params) {

src/core/cff_parser.js

@@ -20,13 +20,13 @@ import {
   stringToBytes,
   Util,
   warn,
-} from "../shared/util";
+} from "../shared/util.js";
 import {
   ExpertCharset,
   ExpertSubsetCharset,
   ISOAdobeCharset,
-} from "./charsets";
-import { ExpertEncoding, StandardEncoding } from "./encodings";
+} from "./charsets.js";
+import { ExpertEncoding, StandardEncoding } from "./encodings.js";
 
 // Maximum subroutine call depth of type 2 chartrings. Matches OTS.
 var MAX_SUBR_NESTING = 10;

src/core/chunked_stream.js

@@ -19,8 +19,8 @@ import {
   arraysToBytes,
   createPromiseCapability,
   isEmptyObj,
-} from "../shared/util";
-import { MissingDataException } from "./core_utils";
+} from "../shared/util.js";
+import { MissingDataException } from "./core_utils.js";
 
 class ChunkedStream {
   constructor(length, chunkSize, manager) {

src/core/cmap.js

@@ -19,11 +19,11 @@ import {
   isString,
   unreachable,
   warn,
-} from "../shared/util";
-import { isCmd, isEOF, isName, isStream } from "./primitives";
-import { Lexer } from "./parser";
-import { MissingDataException } from "./core_utils";
-import { Stream } from "./stream";
+} from "../shared/util.js";
+import { isCmd, isEOF, isName, isStream } from "./primitives.js";
+import { Lexer } from "./parser.js";
+import { MissingDataException } from "./core_utils.js";
+import { Stream } from "./stream.js";
 
 var BUILT_IN_CMAPS = [
   // << Start unicode maps.

src/core/colorspace.js

@@ -21,8 +21,8 @@ import {
   shadow,
   unreachable,
   warn,
-} from "../shared/util";
-import { isDict, isName, isStream } from "./primitives";
+} from "../shared/util.js";
+import { isDict, isName, isStream } from "./primitives.js";
 
 /**
  * Resizes an RGB image with 3 components.

src/core/core_utils.js

@@ -14,7 +14,7 @@
  */
 /* eslint no-var: error */
 
-import { assert, BaseException, warn } from "../shared/util";
+import { assert, BaseException, warn } from "../shared/util.js";
 
 function getLookupTableFactory(initializer) {
   let lookup;

src/core/crypto.js

@@ -22,9 +22,9 @@ import {
   unreachable,
   utf8StringToString,
   warn,
-} from "../shared/util";
-import { isDict, isName, Name } from "./primitives";
-import { DecryptStream } from "./stream";
+} from "../shared/util.js";
+import { isDict, isName, Name } from "./primitives.js";
+import { DecryptStream } from "./stream.js";
 
 var ARCFourCipher = (function ARCFourCipherClosure() {
   function ARCFourCipher(key) {

src/core/document.js

@@ -31,22 +31,22 @@ import {
   stringToPDFString,
   Util,
   warn,
-} from "../shared/util";
-import { Catalog, ObjectLoader, XRef } from "./obj";
-import { Dict, isDict, isName, isStream, Ref } from "./primitives";
+} from "../shared/util.js";
+import { Catalog, ObjectLoader, XRef } from "./obj.js";
+import { Dict, isDict, isName, isStream, Ref } from "./primitives.js";
 import {
   getInheritableProperty,
   MissingDataException,
   XRefEntryException,
   XRefParseException,
-} from "./core_utils";
-import { NullStream, Stream, StreamsSequenceStream } from "./stream";
-import { AnnotationFactory } from "./annotation";
-import { calculateMD5 } from "./crypto";
-import { Linearization } from "./parser";
-import { OperatorList } from "./operator_list";
-import { PartialEvaluator } from "./evaluator";
-import { PDFFunctionFactory } from "./function";
+} from "./core_utils.js";
+import { NullStream, Stream, StreamsSequenceStream } from "./stream.js";
+import { AnnotationFactory } from "./annotation.js";
+import { calculateMD5 } from "./crypto.js";
+import { Linearization } from "./parser.js";
+import { OperatorList } from "./operator_list.js";
+import { PartialEvaluator } from "./evaluator.js";
+import { PDFFunctionFactory } from "./function.js";
 
 const DEFAULT_USER_UNIT = 1.0;
 const LETTER_SIZE_MEDIABOX = [0, 0, 612, 792];

src/core/evaluator.js

@@ -32,8 +32,8 @@ import {
   UNSUPPORTED_FEATURES,
   Util,
   warn,
-} from "../shared/util";
-import { CMapFactory, IdentityCMap } from "./cmap";
+} from "../shared/util.js";
+import { CMapFactory, IdentityCMap } from "./cmap.js";
 import {
   Cmd,
   Dict,
@@ -44,47 +44,47 @@ import {
   isStream,
   Name,
   Ref,
-} from "./primitives";
+} from "./primitives.js";
 import {
   ErrorFont,
   Font,
   FontFlags,
   getFontType,
   IdentityToUnicodeMap,
   ToUnicodeMap,
-} from "./fonts";
+} from "./fonts.js";
 import {
   getEncoding,
   MacRomanEncoding,
   StandardEncoding,
   SymbolSetEncoding,
   WinAnsiEncoding,
   ZapfDingbatsEncoding,
-} from "./encodings";
+} from "./encodings.js";
 import {
   getNormalizedUnicodes,
   getUnicodeForGlyph,
   reverseIfRtl,
-} from "./unicode";
+} from "./unicode.js";
 import {
   getSerifFonts,
   getStdFontMap,
   getSymbolsFonts,
-} from "./standard_fonts";
-import { getTilingPatternIR, Pattern } from "./pattern";
-import { Lexer, Parser } from "./parser";
-import { bidi } from "./bidi";
-import { ColorSpace } from "./colorspace";
-import { DecodeStream } from "./stream";
-import { getGlyphsUnicode } from "./glyphlist";
-import { getLookupTableFactory } from "./core_utils";
-import { getMetrics } from "./metrics";
-import { isPDFFunction } from "./function";
-import { JpegStream } from "./jpeg_stream";
-import { MurmurHash3_64 } from "./murmurhash3";
-import { NativeImageDecoder } from "./image_utils";
-import { OperatorList } from "./operator_list";
-import { PDFImage } from "./image";
+} from "./standard_fonts.js";
+import { getTilingPatternIR, Pattern } from "./pattern.js";
+import { Lexer, Parser } from "./parser.js";
+import { bidi } from "./bidi.js";
+import { ColorSpace } from "./colorspace.js";
+import { DecodeStream } from "./stream.js";
+import { getGlyphsUnicode } from "./glyphlist.js";
+import { getLookupTableFactory } from "./core_utils.js";
+import { getMetrics } from "./metrics.js";
+import { isPDFFunction } from "./function.js";
+import { JpegStream } from "./jpeg_stream.js";
+import { MurmurHash3_64 } from "./murmurhash3.js";
+import { NativeImageDecoder } from "./image_utils.js";
+import { OperatorList } from "./operator_list.js";
+import { PDFImage } from "./image.js";
 
 var PartialEvaluator = (function PartialEvaluatorClosure() {
   const DefaultPartialEvaluatorOptions = {

src/core/font_renderer.js

@@ -19,11 +19,11 @@ import {
   FormatError,
   unreachable,
   warn,
-} from "../shared/util";
-import { CFFParser } from "./cff_parser";
-import { getGlyphsUnicode } from "./glyphlist";
-import { StandardEncoding } from "./encodings";
-import { Stream } from "./stream";
+} from "../shared/util.js";
+import { CFFParser } from "./cff_parser.js";
+import { getGlyphsUnicode } from "./glyphlist.js";
+import { StandardEncoding } from "./encodings.js";
+import { Stream } from "./stream.js";
 
 var FontRendererFactory = (function FontRendererFactoryClosure() {
   function getLong(data, offset) {

src/core/fonts.js

@@ -27,7 +27,7 @@ import {
   string32,
   unreachable,
   warn,
-} from "../shared/util";
+} from "../shared/util.js";
 import {
   CFF,
   CFFCharset,
@@ -39,32 +39,32 @@ import {
   CFFStandardStrings,
   CFFStrings,
   CFFTopDict,
-} from "./cff_parser";
-import { getDingbatsGlyphsUnicode, getGlyphsUnicode } from "./glyphlist";
+} from "./cff_parser.js";
+import { getDingbatsGlyphsUnicode, getGlyphsUnicode } from "./glyphlist.js";
 import {
   getEncoding,
   MacRomanEncoding,
   StandardEncoding,
   SymbolSetEncoding,
   ZapfDingbatsEncoding,
-} from "./encodings";
+} from "./encodings.js";
 import {
   getGlyphMapForStandardFonts,
   getNonStdFontMap,
   getStdFontMap,
   getSupplementalGlyphMapForArialBlack,
   getSupplementalGlyphMapForCalibri,
-} from "./standard_fonts";
+} from "./standard_fonts.js";
 import {
   getUnicodeForGlyph,
   getUnicodeRangeFor,
   mapSpecialUnicodeValues,
-} from "./unicode";
-import { FontRendererFactory } from "./font_renderer";
-import { IdentityCMap } from "./cmap";
-import { MissingDataException } from "./core_utils";
-import { Stream } from "./stream";
-import { Type1Parser } from "./type1_parser";
+} from "./unicode.js";
+import { FontRendererFactory } from "./font_renderer.js";
+import { IdentityCMap } from "./cmap.js";
+import { MissingDataException } from "./core_utils.js";
+import { Stream } from "./stream.js";
+import { Type1Parser } from "./type1_parser.js";
 
 // Unicode Private Use Areas:
 const PRIVATE_USE_AREAS = [

src/core/function.js

@@ -20,9 +20,9 @@ import {
   isEvalSupported,
   shadow,
   unreachable,
-} from "../shared/util";
-import { isDict, isStream } from "./primitives";
-import { PostScriptLexer, PostScriptParser } from "./ps_parser";
+} from "../shared/util.js";
+import { isDict, isStream } from "./primitives.js";
+import { PostScriptLexer, PostScriptParser } from "./ps_parser.js";
 
 let IsEvalSupportedCached = {
   get value() {

src/core/glyphlist.js

@@ -14,7 +14,7 @@
  */
 /* no-babel-preset */
 
-var getLookupTableFactory = require("./core_utils").getLookupTableFactory;
+var getLookupTableFactory = require("./core_utils.js").getLookupTableFactory;
 
 var getGlyphsUnicode = getLookupTableFactory(function(t) {
   t["A"] = 0x0041;

src/core/image.js

@@ -13,12 +13,12 @@
  * limitations under the License.
  */
 
-import { assert, FormatError, ImageKind, info, warn } from "../shared/util";
-import { isName, isStream, Name } from "./primitives";
-import { ColorSpace } from "./colorspace";
-import { DecodeStream } from "./stream";
-import { JpegStream } from "./jpeg_stream";
-import { JpxImage } from "./jpx";
+import { assert, FormatError, ImageKind, info, warn } from "../shared/util.js";
+import { isName, isStream, Name } from "./primitives.js";
+import { ColorSpace } from "./colorspace.js";
+import { DecodeStream } from "./stream.js";
+import { JpegStream } from "./jpeg_stream.js";
+import { JpxImage } from "./jpx.js";
 
 var PDFImage = (function PDFImageClosure() {
   /**

src/core/image_utils.js

@@ -14,9 +14,9 @@
  */
 /* eslint no-var: error */
 
-import { ColorSpace } from "./colorspace";
-import { JpegStream } from "./jpeg_stream";
-import { Stream } from "./stream";
+import { ColorSpace } from "./colorspace.js";
+import { JpegStream } from "./jpeg_stream.js";
+import { Stream } from "./stream.js";
 
 class NativeImageDecoder {
   constructor({

src/core/jbig2.js

@@ -20,9 +20,9 @@ import {
   readUint16,
   readUint32,
   shadow,
-} from "../shared/util";
-import { ArithmeticDecoder } from "./arithmetic_decoder";
-import { CCITTFaxDecoder } from "./ccitt";
+} from "../shared/util.js";
+import { ArithmeticDecoder } from "./arithmetic_decoder.js";
+import { CCITTFaxDecoder } from "./ccitt.js";
 
 class Jbig2Error extends BaseException {
   constructor(msg) {

src/core/jbig2_stream.js

@@ -13,10 +13,10 @@
  * limitations under the License.
  */
 
-import { isDict, isStream } from "./primitives";
-import { DecodeStream } from "./stream";
-import { Jbig2Image } from "./jbig2";
-import { shadow } from "../shared/util";
+import { isDict, isStream } from "./primitives.js";
+import { DecodeStream } from "./stream.js";
+import { Jbig2Image } from "./jbig2.js";
+import { shadow } from "../shared/util.js";
 
 /**
  * For JBIG2's we use a library to decode these images and