Change base structure to use errors instead

src/pre.js

@@ -0,0 +1,62 @@
+var objs =  []
+class recognizer extends EventTarget {
+  constructor(rec) {
+    super()
+    this.obj = rec
+    objs.push(this)
+  }
+  delete() {
+    this.obj.delete()
+  }
+  setWords(words) {
+    this.obj.setWords(words)
+  }
+  setPartialWords(partialWords) {
+    this.obj.setPartialWords(partialWords)
+  }
+  setGrm(grm) {
+    this.obj.setGrm(grm)
+  }
+  setSpkModel(model) {
+    this.obj.setSpkModel(model.obj)
+  }
+  setNLSML(nlsml) {
+    this.obj.setNLSML(nlsml)
+  }
+  setMaxAlternatives(alts) {
+    this.obj.setMaxAlternatives(alts)
+  }
+}
+Module.deleteAll = () => objs.forEach(obj => obj.delete())
+Module.makeModel = async (url, path, id) => {
+  let mdl
+  try {
+    mdl = new Module.model(url, path, id)
+    objs.push(mdl)
+  }
+  catch(e) {
+    return Promise.reject(e.message)
+  }
+  return mdl
+}
+Module.makeSpkModel = async (url, path, id) => {
+  let mdl
+  try {
+    mdl = new Module.spkModel(url, path, id)
+    objs.push(mdl)
+  }
+  catch(e) {
+    return Promise.reject(e.message)
+  }
+  return mdl
+}
+Module.makeRecognizer = async (model, sampleRate) => {
+  let rec
+  try {
+    rec = recognizer(new Module.recognizer(model,sampleRate, objs.length))
+  }
+  catch(e) {
+    return Promise.reject(e.message)
+  }
+  return rec
+}