[semver] Upgrade to 5.5, add typing for coerce (#23120)

types/semver/index.d.ts

@@ -1,4 +1,4 @@
-// Type definitions for semver 5.4
+// Type definitions for semver 5.5
 // Project: https://github.com/npm/node-semver
 // Definitions by: Bart van der Schoor <https://github.com/Bartvds>
 //                 BendingBender <https://github.com/BendingBender>
@@ -143,6 +143,12 @@ export function outside(version: string | SemVer, range: string | Range, hilo: '
  */
 export function intersects(range1: string | Range, range2: string | Range, loose?: boolean): boolean;
 
+// Coercion
+/**
+ * Coerces a string to semver if possible
+ */
+export function coerce(version: string | SemVer): SemVer | null;
+
 export class SemVer {
     constructor(version: string | SemVer, loose?: boolean);
 

types/semver/semver-tests.ts

@@ -65,6 +65,9 @@ bool = semver.ltr(version, str, loose);
 bool = semver.outside(version, str, '<', loose);
 bool = semver.intersects(str, str, loose);
 
+// Coercion
+sem = semver.coerce(str);
+
 let ver = new semver.SemVer(str, bool);
 str = ver.raw;
 bool = ver.loose;