support nodejs (#438)

nodejs-examples/test-offline-tts-zh.js

@@ -0,0 +1,27 @@
+// Copyright (c)  2023  Xiaomi Corporation (authors: Fangjun Kuang)
+
+const sherpa_onnx = require('sherpa-onnx');
+
+function createOfflineTts() {
+  const vits = new sherpa_onnx.OfflineTtsVitsModelConfig();
+  vits.model = './vits-zh-aishell3/vits-aishell3.onnx';
+  vits.lexicon = './vits-zh-aishell3/lexicon.txt';
+  vits.tokens = './vits-zh-aishell3/tokens.txt';
+
+  const modelConfig = new sherpa_onnx.OfflineTtsModelConfig();
+  modelConfig.vits = vits;
+
+  const config = new sherpa_onnx.OfflineTtsConfig();
+  config.model = modelConfig;
+  config.ruleFsts = './vits-zh-aishell3/rule.fst';
+
+  return new sherpa_onnx.OfflineTts(config);
+}
+
+const tts = createOfflineTts();
+const speakerId = 66;
+const speed = 1.0;
+const audio = tts.generate('3年前中国总人口是1411778724人', speakerId, speed);
+audio.save('./test-zh.wav');
+console.log('Saved to test-zh.wav successfully.');
+tts.free();