feat: support negated flags

Author: evenstensberg

lib/bootstrap.js

@@ -20,6 +20,26 @@ const isCommandUsed = commands =>
         return process.argv.includes(cmd.name) || process.argv.includes(cmd.alias);
     });
 
+const resolveNegatedArgs = args => {
+    args._unknown.forEach(arg => {
+        if (arg.includes('--') || arg.includes('--no')) {
+            const argPair = arg.split('=');
+            const optName = arg.includes('--no') ? argPair[0].slice(5) : argPair[0].slice(2);
+
+            let argValue = arg.includes('--no') ? 'false' : argPair[1];
+            if (argValue === 'false') {
+                argValue = false;
+            } else if (argValue === 'true') {
+                argValue = true;
+            }
+
+            const cliFlag = core.find(opt => opt.name === optName);
+            args[cliFlag.group][optName] = argValue;
+            args._all[optName] = argValue;
+        }
+    });
+}
+
 async function runCLI(cli, commandIsUsed) {
     let args;
     const helpFlagExists = isFlagPresent(process.argv, 'help');
@@ -40,6 +60,9 @@ async function runCLI(cli, commandIsUsed) {
     } else {
         try {
             args = cmdArgs(core, { stopAtFirstUnknown: false, partial: true });
+            if (args._unknown) {
+                resolveNegatedArgs(args);
+            }
             const result = await cli.run(args, core);
             if (!result) {
                 return;
@@ -68,7 +91,7 @@ async function runCLI(cli, commandIsUsed) {
                 const newArgKeys = Object.keys(argsMap).filter(arg => !keysToDelete.includes(argsMap[arg].pos));
                 process.argv = newArgKeys;
                 args = cmdArgs(core, { stopAtFirstUnknown: false, partial: true });
-                
+
                 await cli.run(args, core);
                 console.log('\n')
                 process.cliLogger.warn(`duplicate flags found, defaulting to last set value`);