allow to optionally pass in host env to wizer/weval (#136)

Signed-off-by: karthik2804 <karthik.ganeshram@fermyon.com>

Author: karthik2804

src/componentize.js

@@ -158,7 +158,16 @@ export async function componentize(jsSource, witWorld, opts) {
     )
   );
 
+  let hostenv = {};
+
+  if (opts.env) {
+    hostenv = (typeof opts.env === 'object')
+      ? opts.env
+      : process.env;
+  };
+
   const env = {
+    ...hostenv,
     DEBUG: DEBUG_CALLS ? '1' : '',
     SOURCE_NAME: sourceName,
     IMPORT_WRAPPER_CNT: Object.keys(importWrappers).length.toString(),

types.d.ts

@@ -43,6 +43,12 @@ interface ComponentizeOptions {
    * (no experimental subsystems currently supported)
    */
   enableFeatures?: [],
+  /**
+   * Pass environment variables to the spawned Wizer or Weval Process If set to
+   * true, all host environment variables are passed. To pass only a subset,
+   * provide an object with the desired variables.   
+   */
+  env: boolean | Record<string, string>,
 }
 
 /**