diff --git a/src/display/.eslintrc b/src/.eslintrc
similarity index 79%
rename from src/display/.eslintrc
rename to src/.eslintrc
index ab1c5afdf..4a0b538f6 100644
--- a/src/display/.eslintrc
+++ b/src/.eslintrc
@@ -1,6 +1,6 @@
 {
   "extends": [
-    "../../.eslintrc"
+    "../.eslintrc"
   ],
 
   "rules": {
diff --git a/src/core/.eslintrc b/src/core/.eslintrc
index c1831d388..cec998b9c 100644
--- a/src/core/.eslintrc
+++ b/src/core/.eslintrc
@@ -4,7 +4,7 @@
   },
 
   "extends": [
-    "../../.eslintrc"
+    "../.eslintrc"
   ],
 
   "env": {
diff --git a/src/core/annotation.js b/src/core/annotation.js
index 18aa3cdc2..b0736ad69 100644
--- a/src/core/annotation.js
+++ b/src/core/annotation.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 import {
   AnnotationBorderStyleType,
diff --git a/src/core/arithmetic_decoder.js b/src/core/arithmetic_decoder.js
index 58e49e248..bb481acee 100644
--- a/src/core/arithmetic_decoder.js
+++ b/src/core/arithmetic_decoder.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 // Table C-2
 const QeTable = [
diff --git a/src/core/bidi.js b/src/core/bidi.js
index 131977dd4..370fdbe06 100644
--- a/src/core/bidi.js
+++ b/src/core/bidi.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import { warn } from "../shared/util.js";
 
diff --git a/src/core/ccitt_stream.js b/src/core/ccitt_stream.js
index bef561e0e..6eab57ae3 100644
--- a/src/core/ccitt_stream.js
+++ b/src/core/ccitt_stream.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import { Dict, isDict } from "./primitives.js";
 import { CCITTFaxDecoder } from "./ccitt.js";
diff --git a/src/core/cff_parser.js b/src/core/cff_parser.js
index 8f66d42cd..540972e9e 100644
--- a/src/core/cff_parser.js
+++ b/src/core/cff_parser.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import {
   bytesToString,
diff --git a/src/core/charsets.js b/src/core/charsets.js
index 40825f032..62c135f93 100644
--- a/src/core/charsets.js
+++ b/src/core/charsets.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 // prettier-ignore
 const ISOAdobeCharset = [
diff --git a/src/core/chunked_stream.js b/src/core/chunked_stream.js
index a4ba183b5..451984874 100644
--- a/src/core/chunked_stream.js
+++ b/src/core/chunked_stream.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 import {
   arrayByteLength,
diff --git a/src/core/cmap.js b/src/core/cmap.js
index edc67c3d8..71c4d9fd9 100644
--- a/src/core/cmap.js
+++ b/src/core/cmap.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import {
   CMapCompressionType,
diff --git a/src/core/core_utils.js b/src/core/core_utils.js
index 464442ee3..1939b6263 100644
--- a/src/core/core_utils.js
+++ b/src/core/core_utils.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 import { assert, BaseException, warn } from "../shared/util.js";
 
diff --git a/src/core/crypto.js b/src/core/crypto.js
index b8f81a0c6..46d7682ca 100644
--- a/src/core/crypto.js
+++ b/src/core/crypto.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import {
   bytesToString,
diff --git a/src/core/document.js b/src/core/document.js
index 82275b291..51bc738c6 100644
--- a/src/core/document.js
+++ b/src/core/document.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 import {
   assert,
diff --git a/src/core/evaluator.js b/src/core/evaluator.js
index ee03d436b..1441f542d 100644
--- a/src/core/evaluator.js
+++ b/src/core/evaluator.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import {
   AbortException,
diff --git a/src/core/font_renderer.js b/src/core/font_renderer.js
index b09c18a81..7b39a0d70 100644
--- a/src/core/font_renderer.js
+++ b/src/core/font_renderer.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import {
   bytesToString,
diff --git a/src/core/fonts.js b/src/core/fonts.js
index f2b5df5e1..3839a701b 100644
--- a/src/core/fonts.js
+++ b/src/core/fonts.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import {
   assert,
diff --git a/src/core/function.js b/src/core/function.js
index 0b9a7fad6..3e00cadb9 100644
--- a/src/core/function.js
+++ b/src/core/function.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import { Dict, isDict, isStream, Ref } from "./primitives.js";
 import {
diff --git a/src/core/glyphlist.js b/src/core/glyphlist.js
index 3e3d576de..2bf4423a8 100644
--- a/src/core/glyphlist.js
+++ b/src/core/glyphlist.js
@@ -13,6 +13,7 @@
  * limitations under the License.
  */
 /* no-babel-preset */
+/* eslint-disable no-var */
 
 var getLookupTableFactory = require("./core_utils.js").getLookupTableFactory;
 
diff --git a/src/core/image.js b/src/core/image.js
index e33cbcca0..6aac2e560 100644
--- a/src/core/image.js
+++ b/src/core/image.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import { assert, FormatError, ImageKind, info, warn } from "../shared/util.js";
 import { isName, isStream, Name } from "./primitives.js";
diff --git a/src/core/image_utils.js b/src/core/image_utils.js
index 3e1f89998..d1faf37dd 100644
--- a/src/core/image_utils.js
+++ b/src/core/image_utils.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 import { assert, info, shadow, unreachable } from "../shared/util.js";
 import { RefSetCache } from "./primitives.js";
diff --git a/src/core/jbig2.js b/src/core/jbig2.js
index 31e05ab19..db3301960 100644
--- a/src/core/jbig2.js
+++ b/src/core/jbig2.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import { BaseException, shadow } from "../shared/util.js";
 import { log2, readInt8, readUint16, readUint32 } from "./core_utils.js";
diff --git a/src/core/jpg.js b/src/core/jpg.js
index c6d0e83fd..c621d794c 100644
--- a/src/core/jpg.js
+++ b/src/core/jpg.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import { assert, BaseException, warn } from "../shared/util.js";
 import { readUint16 } from "./core_utils.js";
diff --git a/src/core/jpx.js b/src/core/jpx.js
index 837ebba46..4269338c2 100644
--- a/src/core/jpx.js
+++ b/src/core/jpx.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import { BaseException, info, warn } from "../shared/util.js";
 import { log2, readUint16, readUint32 } from "./core_utils.js";
diff --git a/src/core/metrics.js b/src/core/metrics.js
index 6fac14c00..e95d6316a 100644
--- a/src/core/metrics.js
+++ b/src/core/metrics.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import { getLookupTableFactory } from "./core_utils.js";
 
diff --git a/src/core/murmurhash3.js b/src/core/murmurhash3.js
index cefec5fba..a4dfec3c3 100644
--- a/src/core/murmurhash3.js
+++ b/src/core/murmurhash3.js
@@ -16,7 +16,6 @@
  * Based on https://code.google.com/p/smhasher/wiki/MurmurHash3.
  * Hashes roughly 100 KB per millisecond on i7 3.4 GHz.
  */
-/* eslint no-var: error */
 
 import { isArrayBuffer, isString } from "../shared/util.js";
 
diff --git a/src/core/obj.js b/src/core/obj.js
index 0e1ffbcb6..ae281f571 100644
--- a/src/core/obj.js
+++ b/src/core/obj.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import {
   assert,
diff --git a/src/core/operator_list.js b/src/core/operator_list.js
index ca1ff2505..cf8e9c575 100644
--- a/src/core/operator_list.js
+++ b/src/core/operator_list.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import { assert, ImageKind, OPS, warn } from "../shared/util.js";
 
diff --git a/src/core/parser.js b/src/core/parser.js
index 25ec213f0..6692adbda 100644
--- a/src/core/parser.js
+++ b/src/core/parser.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 import {
   Ascii85Stream,
diff --git a/src/core/pattern.js b/src/core/pattern.js
index c3daefb72..34f0ab138 100644
--- a/src/core/pattern.js
+++ b/src/core/pattern.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import {
   assert,
diff --git a/src/core/primitives.js b/src/core/primitives.js
index a1e83b165..a6083db99 100644
--- a/src/core/primitives.js
+++ b/src/core/primitives.js
@@ -12,7 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* uses XRef */
+/* eslint-disable no-var */
 
 import { assert, unreachable } from "../shared/util.js";
 
diff --git a/src/core/ps_parser.js b/src/core/ps_parser.js
index fc97b057f..23ecf743b 100644
--- a/src/core/ps_parser.js
+++ b/src/core/ps_parser.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 import { FormatError, shadow } from "../shared/util.js";
 import { EOF } from "./primitives.js";
diff --git a/src/core/standard_fonts.js b/src/core/standard_fonts.js
index 5d6469e1d..1bf7b53ef 100644
--- a/src/core/standard_fonts.js
+++ b/src/core/standard_fonts.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 import { getLookupTableFactory } from "./core_utils.js";
 
diff --git a/src/core/stream.js b/src/core/stream.js
index 03c827d82..9e84fcc94 100644
--- a/src/core/stream.js
+++ b/src/core/stream.js
@@ -18,6 +18,7 @@
  * of XPDF's implementation, made available under the Apache 2.0 open source
  * license.
  */
+/* eslint-disable no-var */
 
 import { FormatError, stringToBytes, unreachable } from "../shared/util.js";
 import { isDict } from "./primitives.js";
diff --git a/src/core/type1_parser.js b/src/core/type1_parser.js
index 0083b541b..4f1acf017 100644
--- a/src/core/type1_parser.js
+++ b/src/core/type1_parser.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import { getEncoding } from "./encodings.js";
 import { isWhiteSpace } from "./core_utils.js";
diff --git a/src/core/unicode.js b/src/core/unicode.js
index 57b8ed676..118a713b1 100644
--- a/src/core/unicode.js
+++ b/src/core/unicode.js
@@ -13,6 +13,7 @@
  * limitations under the License.
  */
 /* no-babel-preset */
+/* eslint-disable no-var */
 
 var getLookupTableFactory = require("./core_utils.js").getLookupTableFactory;
 
diff --git a/src/core/worker.js b/src/core/worker.js
index bd6257de0..673b3f45c 100644
--- a/src/core/worker.js
+++ b/src/core/worker.js
@@ -12,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* eslint-disable no-var */
 
 import {
   AbortException,
diff --git a/src/core/worker_stream.js b/src/core/worker_stream.js
index 7e1c2f24b..204c08f80 100644
--- a/src/core/worker_stream.js
+++ b/src/core/worker_stream.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 import { assert } from "../shared/util.js";
 
diff --git a/src/core/writer.js b/src/core/writer.js
index 3499bd961..16c58fe97 100644
--- a/src/core/writer.js
+++ b/src/core/writer.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* eslint no-var: error */
 
 import { bytesToString, escapeString, warn } from "../shared/util.js";
 import { Dict, isDict, isName, isRef, isStream, Name } from "./primitives.js";
diff --git a/src/shared/.eslintrc b/src/shared/.eslintrc
deleted file mode 100644
index ab1c5afdf..000000000
--- a/src/shared/.eslintrc
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "extends": [
-    "../../.eslintrc"
-  ],
-
-  "rules": {
-    // ECMAScript 6
-    "no-var": "error",
-  },
-}