optimize build

build.sh

@@ -9,9 +9,7 @@ if [ "$1" == "dev" ];
 then
     extension="-O0 -g3 -s ASSERTIONS=1 -s SAFE_HEAP=1 -s STACK_OVERFLOW_CHECK=2"
 else
-    # TODO: This appears to be a bug in emscripten. Disable assertions when that bug is resolved or a workaround found.
-    # ASSERTIONS=1 required with optimisations and strict mode. https://github.com/emscripten-core/emscripten/issues/20721
-    extension="-O3 --closure 1 -s ASSERTIONS=1"
+    extension="-O3 --closure 1"
 fi
 
 emcc \
@@ -32,6 +30,7 @@ emcc \
         'locateFile', \
         'preRun'
     ]" \
+    -s ENVIRONMENT="web,worker,node" \
     -s STRICT_JS=0 \
     -s MODULARIZE=1 \
     -s ALLOW_TABLE_GROWTH=1 \

test/initialization.test.js

@@ -1,4 +1,5 @@
 import { LuaFactory } from '../dist/index.js'
+import { expect } from 'chai'
 
 describe('Initialization', () => {
     it('create engine should succeed', async () => {
@@ -13,4 +14,15 @@ describe('Initialization', () => {
             traceAllocations: true,
         })
     })
+
+    it('create with environment variables should succeed', async () => {
+        const env = {
+            ENV_TEST: 'test',
+        }
+        const engine = await new LuaFactory(undefined, env).createEngine()
+
+        const value = await engine.doString('return os.getenv("ENV_TEST")')
+
+        expect(value).to.be.equal(env.ENV_TEST)
+    })
 })