Refactor ASM3 constructor to remove state parameter and update compute_dC method to use state directly; add Reactor_CSTR class for reactor simulation with forward Euler method

dependencies/reactor_class.js

@@ -0,0 +1,21 @@
+const ASM3 = require('./asm3_class')
+const math = require('mathjs')
+
+class Reactor_CSTR {
+    
+    constructor(initial_state){
+        this.state = initial_state;
+        this.asm = new ASM3();
+    }
+
+    tick_fe(time_step){ // tick reactor state using forward Euler method
+        const delta = this.asm.compute_dC(this.state);
+        this.state = math.add(this.state, math.multiply(delta, time_step));
+        return this.state;
+    }
+}
+
+// testing stuff
+let state = [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1];
+const Reactor = new Reactor_CSTR(state);
+console.log(Reactor.tick_fe(0.001));