[javascript] Fixed fs files support for Electron (#5765)

modules/swagger-codegen/src/main/resources/Javascript-es6/ApiClient.mustache

@@ -160,9 +160,15 @@ export default class ApiClient {
     */
     {{/emitJSDoc}}
     isFileParam(param) {
-        // fs.ReadStream in Node.js (but not in runtime like browserify)
+        // fs.ReadStream in Node.js and Electron (but not in runtime like browserify)
-        if (typeof window === 'undefined' && typeof require === 'function' && require('fs') && param instanceof require('fs').ReadStream) {
+        if (typeof require === 'function') {
-            return true;
+            let fs;
+            try {
+                fs = require('fs');
+            } catch (err) {}
+            if (fs && fs.ReadStream && param instanceof fs.ReadStream) {
+                return true;
+            }
         }
 
         // Buffer in Node.js

modules/swagger-codegen/src/main/resources/Javascript/ApiClient.mustache

@@ -168,12 +168,15 @@
    * @returns {Boolean} <code>true</code> if <code>param</code> represents a file.
    */
 {{/emitJSDoc}}  exports.prototype.isFileParam = function(param) {
-    // fs.ReadStream in Node.js (but not in runtime like browserify)
+    // fs.ReadStream in Node.js and Electron (but not in runtime like browserify)
-    if (typeof window === 'undefined' &&
+    if (typeof require === 'function') {
-        typeof require === 'function' &&
+      var fs;
-        require('fs') &&
+      try {
-        param instanceof require('fs').ReadStream) {
+        fs = require('fs');
-      return true;
+      } catch (err) {}
+      if (fs && fs.ReadStream && param instanceof fs.ReadStream) {
+        return true;
+      }
     }
     // Buffer in Node.js
     if (typeof Buffer === 'function' && param instanceof Buffer) {

samples/client/petstore/javascript-es6/src/ApiClient.js

@@ -174,12 +174,15 @@
    * @returns {Boolean} <code>true</code> if <code>param</code> represents a file.
    */
   exports.prototype.isFileParam = function(param) {
-    // fs.ReadStream in Node.js (but not in runtime like browserify)
+    // fs.ReadStream in Node.js and Electron (but not in runtime like browserify)
-    if (typeof window === 'undefined' &&
+    if (typeof require === 'function') {
-        typeof require === 'function' &&
+      var fs;
-        require('fs') &&
+      try {
-        param instanceof require('fs').ReadStream) {
+        fs = require('fs');
-      return true;
+      } catch (err) {}
+      if (fs && fs.ReadStream && param instanceof fs.ReadStream) {
+        return true;
+      }
     }
     // Buffer in Node.js
     if (typeof Buffer === 'function' && param instanceof Buffer) {

samples/client/petstore/javascript-promise-es6/src/ApiClient.js

@@ -174,12 +174,15 @@
    * @returns {Boolean} <code>true</code> if <code>param</code> represents a file.
    */
   exports.prototype.isFileParam = function(param) {
-    // fs.ReadStream in Node.js (but not in runtime like browserify)
+    // fs.ReadStream in Node.js and Electron (but not in runtime like browserify)
-    if (typeof window === 'undefined' &&
+    if (typeof require === 'function') {
-        typeof require === 'function' &&
+      var fs;
-        require('fs') &&
+      try {
-        param instanceof require('fs').ReadStream) {
+        fs = require('fs');
-      return true;
+      } catch (err) {}
+      if (fs && fs.ReadStream && param instanceof fs.ReadStream) {
+        return true;
+      }
     }
     // Buffer in Node.js
     if (typeof Buffer === 'function' && param instanceof Buffer) {

samples/client/petstore/javascript-promise/src/ApiClient.js

@@ -174,12 +174,15 @@
    * @returns {Boolean} <code>true</code> if <code>param</code> represents a file.
    */
   exports.prototype.isFileParam = function(param) {
-    // fs.ReadStream in Node.js (but not in runtime like browserify)
+    // fs.ReadStream in Node.js and Electron (but not in runtime like browserify)
-    if (typeof window === 'undefined' &&
+    if (typeof require === 'function') {
-        typeof require === 'function' &&
+      var fs;
-        require('fs') &&
+      try {
-        param instanceof require('fs').ReadStream) {
+        fs = require('fs');
-      return true;
+      } catch (err) {}
+      if (fs && fs.ReadStream && param instanceof fs.ReadStream) {
+        return true;
+      }
     }
     // Buffer in Node.js
     if (typeof Buffer === 'function' && param instanceof Buffer) {

samples/client/petstore/javascript/src/ApiClient.js

@@ -174,12 +174,15 @@
    * @returns {Boolean} <code>true</code> if <code>param</code> represents a file.
    */
   exports.prototype.isFileParam = function(param) {
-    // fs.ReadStream in Node.js (but not in runtime like browserify)
+    // fs.ReadStream in Node.js and Electron (but not in runtime like browserify)
-    if (typeof window === 'undefined' &&
+    if (typeof require === 'function') {
-        typeof require === 'function' &&
+      var fs;
-        require('fs') &&
+      try {
-        param instanceof require('fs').ReadStream) {
+        fs = require('fs');
-      return true;
+      } catch (err) {}
+      if (fs && fs.ReadStream && param instanceof fs.ReadStream) {
+        return true;
+      }
     }
     // Buffer in Node.js
     if (typeof Buffer === 'function' && param instanceof Buffer) {