add support unset env feature (#118)

changelog.d/+support-unset-feature.added.md

@@ -0,0 +1 @@
+support unset env feature part of https://github.com/metalbear-co/mirrord/issues/2260

src/api.ts

@@ -197,15 +197,17 @@ export class MirrordExecution {
 
   env: Map<string, string>;
   patchedPath: string | null;
+  envToUnset: undefined | string[];
 
-  constructor(env: Map<string, string>, patchedPath: string | null) {
+  constructor(env: Map<string, string>, patchedPath: string | null, envToUnset: string[]) {
     this.env = env;
     this.patchedPath = patchedPath;
+    this.envToUnset = envToUnset;
   }
 
   static mirrordExecutionFromJson(data: string): MirrordExecution {
     const parsed = JSON.parse(data);
-    return new MirrordExecution(new Map(Object.entries(parsed["environment"])), parsed["patched_path"]);
+    return new MirrordExecution(new Map(Object.entries(parsed["environment"])), parsed["patched_path"], parsed["env_to_unset"]);
   }
 
 }

src/debugger.ts

@@ -186,8 +186,15 @@ async function main(
   }
 
   let env = executionInfo?.env;
+
   config.env = Object.assign({}, config.env, Object.fromEntries(env));
 
+  if (executionInfo.envToUnset) {
+    for (let key of executionInfo.envToUnset) {
+      delete config.env[key]
+    }
+  }
+
   config.env["__MIRRORD_EXT_INJECTED"] = 'true';
 
   return config;