fix: avoid getting the bool params as strings in the webpack config like a truthy "false". (#669)

Author: Dimitar Tachev

Diff for: lib/compiler.js

@@ -135,10 +135,17 @@ function buildEnvCommandLineParams(config, envData, $logger) {
     const args = [];
     envFlagNames.map(item => {
         let envValue = envData[item];
-        if (!Array.isArray(envValue)) {
-            envValue = [envValue];
+        if (typeof envValue === "boolean") {
+            if (envValue) {
+                args.push(`--env.${item}`);
+            }
+        } else {
+            if (!Array.isArray(envValue)) {
+                envValue = [envValue];
+            }
+
+            envValue.map(value => args.push(`--env.${item}=${value}`))
         }
-        envValue.map(value => args.push(`--env.${item}=${value}`))
     });
 
     return args;