drop Node support < 6, and resolve acorn CVE npm-1488

.travis.yml

@@ -1,11 +1,9 @@
 sudo: false
 language: node_js
 node_js:
+  - '12'
   - '10'
   - '8'
   - '6'
-  - '4'
-  - '0.12'
-  - '0.10'
 after_script:
   - npm run coveralls

appveyor.yml

@@ -4,12 +4,10 @@
 environment:
   matrix:
     # node.js
-    - nodejs_version: "0.10"
-    - nodejs_version: "0.12"
-    - nodejs_version: "4"
     - nodejs_version: "6"
     - nodejs_version: "8"
     - nodejs_version: "10"
+    - nodejs_version: "12"
 
 install:
   - ps: Install-Product node $env:nodejs_version

package.json

@@ -1,6 +1,6 @@
 {
   "name": "gulp-sourcemaps",
-  "version": "2.6.5",
+  "version": "3.0.0-0",
   "description": "Sourcemap support for gulpjs.",
   "homepage": "http://github.com/gulp-sourcemaps/gulp-sourcemaps",
   "repository": "git://github.com/gulp-sourcemaps/gulp-sourcemaps.git",
@@ -21,9 +21,9 @@
   "author": "Florian Reiterer <me@florianreiterer.com>",
   "license": "ISC",
   "dependencies": {
-    "@gulp-sourcemaps/identity-map": "^1.0.0",
+    "@gulp-sourcemaps/identity-map": "^2.0.1",
     "@gulp-sourcemaps/map-sources": "^1.0.0",
-    "acorn": "^5.0.0",
+    "acorn": "^6.4.1",
     "convert-source-map": "^1.0.0",
     "css": "^2.0.0",
     "debug-fabulous": "^1.0.0",
@@ -35,7 +35,7 @@
   },
   "devDependencies": {
     "bootstrap": "^3.4.1",
-    "eslint": "^2.13.0",
+    "eslint": "^5.16.0",
     "eslint-config-gulp": "^3.0.1",
     "expect": "^1.20.2",
     "gulp": "^4.0.0",
@@ -57,6 +57,6 @@
     "src"
   ],
   "engines": {
-    "node": ">= 0.10"
+    "node": ">= 6"
   }
 }

src/utils.js

@@ -18,7 +18,7 @@ See http://stackoverflow.com/questions/10229144/bug-with-regexp-in-javascript-wh
 So we either need to use a new instance of a regex everywhere.
 */
 function sourceMapUrlRegEx() {
-  return /\/\/\# sourceMappingURL\=.*/g;
+  return /\/\/# sourceMappingURL=.*/g;
 }
 
 var commentFormatters = {

test/init.test.js

@@ -159,7 +159,7 @@ describe('init', function() {
       expect(data.sourceMap.sources[0]).toEqual('test.css');
       expect(data.sourceMap.sourcesContent[0]).toEqual(helpers.sourceContentCSS);
       expect(data.sourceMap.names).toEqual([]);
-      expect(data.sourceMap.mappings).toEqual('CAAC;GACE;GACA');
+      expect(data.sourceMap.mappings).toEqual('AAAA;EACE,gBAAgB;EAChB,WAAW;AACb');
     }
 
     pipe([
@@ -194,7 +194,7 @@ describe('init', function() {
     ], done);
   });
 
-  it('should load external source map file referenced in comment with the \/\/# syntax', function(done) {
+  it('should load external source map file referenced in comment with the //# syntax', function(done) {
     var file = helpers.makeFile();
     file.contents = new Buffer(helpers.sourceContent + '\n//# sourceMappingURL=helloworld2.js.map');
 
@@ -214,7 +214,7 @@ describe('init', function() {
     ], done);
   });
 
-  it('css: should load external source map file referenced in comment with the \/\/*# syntax', function(done) {
+  it('css: should load external source map file referenced in comment with the //*# syntax', function(done) {
     var file = helpers.makeFileCSS();
     file.contents = new Buffer(helpers.sourceContentCSS + '\n/*# sourceMappingURL=test.css.map */');
 
@@ -234,7 +234,7 @@ describe('init', function() {
     ], done);
   });
 
-  it('should remove source map comment with the \/\/# syntax', function(done) {
+  it('should remove source map comment with the //# syntax', function(done) {
     var file = helpers.makeFile();
     file.contents = new Buffer(helpers.sourceContent + '\n//# sourceMappingURL=helloworld2.js.map');
 
@@ -250,7 +250,7 @@ describe('init', function() {
     ], done);
   });
 
-  it('init: css: should remove source map comment with the \/\/*# syntax', function(done) {
+  it('init: css: should remove source map comment with the //*# syntax', function(done) {
     var file = helpers.makeFileCSS();
     file.contents = new Buffer(helpers.sourceContentCSS + '\n/*# sourceMappingURL=test.css.map */');
 
@@ -267,7 +267,7 @@ describe('init', function() {
     ], done);
   });
 
-  it('should load external source map file referenced in comment with the \/*# *\/ syntax', function(done) {
+  it('should load external source map file referenced in comment with the /*# */ syntax', function(done) {
     var file = helpers.makeFile();
     file.contents = new Buffer(helpers.sourceContent + '\n/*# sourceMappingURL=helloworld2.js.map */');
 
@@ -287,7 +287,7 @@ describe('init', function() {
     ], done);
   });
 
-  it('should remove source map comment with the \/\/# syntax', function(done) {
+  it('should remove source map comment with the //# syntax', function(done) {
     var file = helpers.makeFile();
     file.contents = new Buffer(helpers.sourceContent + '\n/*# sourceMappingURL=helloworld2.js.map */');