Hopefully make preinstall condition work on Travis CI's /bin/sh

Author: lehni

.travis.yml

@@ -41,4 +41,4 @@ script:
 - gulp minify
 - gulp test
 - gulp zip
-- '[ "${TRAVIS_BRANCH}" = "develop" ] && [ "${TRAVIS_NODE_VERSION}" = "11" ] && travis/deploy-prebuilt.sh || true'
+- '[ "${TRAVIS_BRANCH}" = "develop" ] && [ "${TRAVIS_NODE_VERSION}" = "14" ] && travis/deploy-prebuilt.sh || true'

package.json

@@ -23,7 +23,7 @@
     "load": "gulp load",
     "jshint": "gulp jshint",
     "test": "gulp test",
-    "preinstall": "[[ $npm_config_heading == 'npm' ]] && npx npm-force-resolutions || true"
+    "preinstall": "[ $npm_config_heading = 'npm' ] && npx npm-force-resolutions || true"
   },
   "files": [
     "AUTHORS.md",