Fix CI with older Node.js versions.

Author: jjrv

.travis.yml

@@ -49,9 +49,6 @@ matrix:
 #    - os: osx
 #      env: CC=clang-3.8 CXX=clang++-3.8 npm_config_clang=1
 
-before_install:
-  VER=`npm --version` eval 'ARRAY=(${VER//./ }) && if [ ${ARRAY[0]} -lt 2 ] || ( [ ${ARRAY[0]} -eq 2 ] && [ ${ARRAY[1]} -lt 13 ] ) ; then npm install -g npm; fi'
-
 after_script:
   if [ ${TRAVIS_JOB_NUMBER##*.} == 1 ] && [ "$TRAVIS_PULL_REQUEST" == "false" ]; then bin/ci-trigger; fi
 

appveyor.yml

@@ -15,7 +15,6 @@ matrix:
   allow_failures:
   - nodejs_version: 0.10
 install:
-- npm install -g npm
 - set PATH=%APPDATA%\npm;%PATH%
 - npm install
 build: off

package.json

@@ -18,8 +18,8 @@
     "tslint": "tslint",
     "cbuild": "cbuild",
     "dump-lib": "dump-em-lib dist/em-api.js",
-    "lint": "tslint --type-check -c src/tslint.json -p src/tsconfig.json && tslint --type-check -c src/tslint.json -p src/em/tsconfig.json",
-    "prepublish": "npm run lint && tsc -p src/em && tsc -p src && cbuild -x -v -s dist/bundle/em/em-api.js -o dist/em-api.js",
+    "lint": "node src/checkver.js lt 4.1.2 || (tslint --type-check -c src/tslint.json -p src/tsconfig.json && tslint --type-check -c src/tslint.json -p src/em/tsconfig.json)",
+    "prepublish": "npm run lint && tsc -p src/em && tsc -p src && (node src/checkver.js lt 0.12.0 || cbuild -x -v -s dist/bundle/em/em-api.js -o dist/em-api.js)",
     "clean-asm": "cd test/em && node-gyp clean",
     "config-test": "autogypi -c test/autogypi.json",
     "test-asm": "npm run config-test && cd test/em && node-gyp configure build --asmjs=1 && node ../../bin/ndts . > ../testlib.d.ts && tsc -p .. && tap ../test.js",

src/checkver.js

@@ -0,0 +1,31 @@
+
+var op = process.argv[2].match(/^([gl])([te])$/);
+var wanted = (process.argv[3] || '').split('.');
+var version = process.versions.node.split('.');
+
+if(!op || wanted.length != 3) {
+	console.log([
+		'usage:',
+		process.argv[0].replace(/.*\//, ''),
+		process.argv[1].replace(/.*\//, ''),
+		'op',
+		'x.y.z'
+	].join(' '));
+
+	console.log('\nCompare Node.js version.');
+	console.log('Following op codes determine whether it must be:\n');
+
+	console.log('\tgt\tGreater than x.y.z.');
+	console.log('\tge\tGreater than or equal to x.y.z.');
+	console.log('\tlt\tLess than x.y.z.');
+	console.log('\tle\tLess than or equal to x.y.z.');
+
+	process.exit(1);
+}
+
+for(var i = 0; i < 3; ++i) {
+	if(+version[i] > +wanted[i]) process.exit(+(op[1] != 'g'));
+	if(+version[i] < +wanted[i]) process.exit(+(op[1] == 'g'));
+}
+
+process.exit(+(op[2] != 'e'));