feat: add strict metadata key

Author: quoid

extension/Userscripts Extension/Functions.swift

@@ -1325,6 +1325,7 @@ func getCode(_ filenames: [String], _ isTop: Bool, _ strictMode: Bool)-> [String
         let requires = metadata["require"] ?? []
         let version = metadata["version"]?[0] ?? ""
         let noframes = metadata["noframes"] != nil ? true : false
+        let strictValue = metadata["strict"]?[0] == "true" ? true : false
         var scriptObject:[String: Any] = [
             "description": description,
             "excludes": excludes,
@@ -1341,6 +1342,7 @@ func getCode(_ filenames: [String], _ isTop: Bool, _ strictMode: Bool)-> [String
             "resources": "",
             "require": requires,
             "run-at": runAt,
+            "strict": strictValue,
             "version": version
         ]
         // certain metadata keys use a different key name then the actual key name

extension/Userscripts Extension/Resources/content.js

@@ -240,10 +240,10 @@ function processJS(userscript) {
 
 // preCode is the GM apis and boilerplate
 // requiredCode is whatever has be requested with `@require` tags
-function wrapCode(preCode, requiredCode, code, filename) {
+function wrapCode(preCode, requiredCode, code, strict = false, filename) {
     return `
         (function() {
-            ${data.strictMode ? "\"use strict\";" : ""}
+            ${(data.strictMode || strict) ? "\"use strict\";" : ""}
             ${preCode}
             ${requiredCode}
             (function() {
@@ -264,6 +264,7 @@ function injectJS(userscript) {
         userscript.preCode,
         userscript.requiredCode,
         userscript.code,
+        userscript.scriptObject.strict,
         filename
     );
     const name = userscript.scriptObject.name;
@@ -466,6 +467,7 @@ browser.runtime.onMessage.addListener((request, sender, sendResponse) => {
                         item.preCode,
                         item.requiredCode,
                         item.code,
+                        item.scriptObject.strict,
                         filename
                     )
                 });