Remove use of deprecated npm flag

--omit=dev was introduced in npm 7 in 2021. This will break npm 6, however this is very EOL now, so don't think this is a major issue.

Signed-off-by: Chad Wilson <[email protected]>

js.json

@@ -19,19 +19,19 @@
         "windows": [
             "npm",
             "install",
-            "--production",
+            "--omit=dev",
             "--silent"
         ],
         "darwin": [
             "npm",
             "install",
-            "--production",
+            "--omit=dev",
             "--silent"
         ],
         "linux": [
             "npm",
             "install",
-            "--production",
+            "--omit=dev",
             "--silent"
         ]
     },
@@ -51,7 +51,7 @@
             "--init"
         ]
     },
-    "version": "3.0.1",
+    "version": "4.0.0",
     "gaugeVersionSupport": {
         "minimum": "1.0.7",
         "maximum": ""

package.json

@@ -1,6 +1,6 @@
 {
   "name": "gauge-js",
-  "version": "3.0.1",
+  "version": "4.0.0",
   "description": "JavaScript runner for Gauge",
   "main": "index.js",
   "scripts": {

scripts/install.js

@@ -37,7 +37,7 @@ var prepareFiles = function () {
   try {
     console.log("Installing dependencies...");
     fs.removeSync("./node_modules");
-    child_process.execSync("npm install --production", { cwd: localPath() });
+    child_process.execSync("npm install --omit-dev", { cwd: localPath() });
   } catch (err) {
     console.error("Error installing dependencies: %s", err.toString());
     console.error(err.stack);