fatsify核心功能示例测试!!!

node_modules/avvio/lib/thenify.js

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+'use strict'
+
+const { debug } = require('./debug')
+const { kThenifyDoNotWrap } = require('./symbols')
+
+/**
+ * @callback PromiseConstructorLikeResolve
+ * @param {any} value
+ * @returns {void}
+ */
+
+/**
+ * @callback PromiseConstructorLikeReject
+ * @param {reason} error
+ * @returns {void}
+ */
+
+/**
+ * @callback PromiseConstructorLike
+ * @param {PromiseConstructorLikeResolve} resolve
+ * @param {PromiseConstructorLikeReject} reject
+ * @returns {void}
+ */
+
+/**
+ * @returns {PromiseConstructorLike}
+ */
+function thenify () {
+  // If the instance is ready, then there is
+  // nothing to await. This is true during
+  // await server.ready() as ready() resolves
+  // with the server, end we will end up here
+  // because of automatic promise chaining.
+  if (this.booted) {
+    debug('thenify returning undefined because we are already booted')
+    return
+  }
+
+  // Calling resolve(this._server) would fetch the then
+  // property on the server, which will lead it here.
+  // If we do not break the recursion, we will loop
+  // forever.
+  if (this[kThenifyDoNotWrap]) {
+    this[kThenifyDoNotWrap] = false
+    return
+  }
+
+  debug('thenify')
+  return (resolve, reject) => {
+    const p = this._loadRegistered()
+    return p.then(() => {
+      this[kThenifyDoNotWrap] = true
+      return resolve(this._server)
+    }, reject)
+  }
+}
+
+module.exports = {
+  thenify
+}