chore: upgrade to TypeScript 3.0.1 (#3024)

lib/Multimap.js

@@ -13,12 +13,19 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+/**
+ * @template T
+ * @template V
+ */
 class Multimap {
   constructor() {
     this._map = new Map();
   }
 
+  /**
+   * @param {T} key
+   * @param {V} value
+   */
   set(key, value) {
     let set = this._map.get(key);
     if (!set) {
@@ -28,6 +35,10 @@ class Multimap {
     set.add(value);
   }
 
+  /**
+   * @param {T} key
+   * @return {!Set<V>}
+   */
   get(key) {
     let result = this._map.get(key);
     if (!result)
@@ -35,10 +46,19 @@ class Multimap {
     return result;
   }
 
+  /**
+   * @param {T} key
+   * @return {boolean}
+   */
   has(key) {
     return this._map.has(key);
   }
 
+  /**
+   * @param {T} key
+   * @param {V} value
+   * @return {boolean}
+   */
   hasValue(key, value) {
     const set = this._map.get(key);
     if (!set)
@@ -53,6 +73,11 @@ class Multimap {
     return this._map.size;
   }
 
+  /**
+   * @param {T} key
+   * @param {V} value
+   * @return {boolean}
+   */
   delete(key, value) {
     const values = this.get(key);
     const result = values.delete(value);
@@ -61,10 +86,17 @@ class Multimap {
     return result;
   }
 
+  /**
+   * @param {T} key
+   */
   deleteAll(key) {
     this._map.delete(key);
   }
 
+  /**
+   * @param {T} key
+   * @return {V}
+   */
   firstValue(key) {
     const set = this._map.get(key);
     if (!set)
@@ -72,10 +104,16 @@ class Multimap {
     return set.values().next().value;
   }
 
+  /**
+   * @return {T}
+   */
   firstKey() {
     return this._map.keys().next().value;
   }
 
+  /**
+   * @return {!Array<V>}
+   */
   valuesArray() {
     const result = [];
     for (const key of this._map.keys())
@@ -83,6 +121,9 @@ class Multimap {
     return result;
   }
 
+  /**
+   * @return {!Array<T>}
+   */
   keysArray() {
     return Array.from(this._map.keys());
   }