add test

Author: DetachHead

tests/baselines/reference/firstMatchRegExpMatchArray.errors.txt

@@ -0,0 +1,15 @@
+tests/cases/compiler/firstMatchRegExpMatchArray.ts(5,11): error TS2322: Type 'string | undefined' is not assignable to type 'string'.
+  Type 'undefined' is not assignable to type 'string'.
+
+
+==== tests/cases/compiler/firstMatchRegExpMatchArray.ts (1 errors) ====
+    const match = ''.match(/ /)
+    
+    if (match !== null) {
+        const foo: string = match[0]
+        const bar: string = match[1]
+              ~~~
+!!! error TS2322: Type 'string | undefined' is not assignable to type 'string'.
+!!! error TS2322:   Type 'undefined' is not assignable to type 'string'.
+    }
+    

tests/baselines/reference/firstMatchRegExpMatchArray.js

@@ -0,0 +1,16 @@
+//// [firstMatchRegExpMatchArray.ts]
+const match = ''.match(/ /)
+
+if (match !== null) {
+    const foo: string = match[0]
+    const bar: string = match[1]
+}
+
+
+//// [firstMatchRegExpMatchArray.js]
+"use strict";
+var match = ''.match(/ /);
+if (match !== null) {
+    var foo = match[0];
+    var bar = match[1];
+}

tests/baselines/reference/firstMatchRegExpMatchArray.symbols

@@ -0,0 +1,19 @@
+=== tests/cases/compiler/firstMatchRegExpMatchArray.ts ===
+const match = ''.match(/ /)
+>match : Symbol(match, Decl(firstMatchRegExpMatchArray.ts, 0, 5))
+>''.match : Symbol(String.match, Decl(lib.es5.d.ts, --, --))
+>match : Symbol(String.match, Decl(lib.es5.d.ts, --, --))
+
+if (match !== null) {
+>match : Symbol(match, Decl(firstMatchRegExpMatchArray.ts, 0, 5))
+
+    const foo: string = match[0]
+>foo : Symbol(foo, Decl(firstMatchRegExpMatchArray.ts, 3, 9))
+>match : Symbol(match, Decl(firstMatchRegExpMatchArray.ts, 0, 5))
+>0 : Symbol(RegExpMatchArray[0], Decl(lib.es5.d.ts, --, --))
+
+    const bar: string = match[1]
+>bar : Symbol(bar, Decl(firstMatchRegExpMatchArray.ts, 4, 9))
+>match : Symbol(match, Decl(firstMatchRegExpMatchArray.ts, 0, 5))
+}
+

tests/baselines/reference/firstMatchRegExpMatchArray.types

@@ -0,0 +1,27 @@
+=== tests/cases/compiler/firstMatchRegExpMatchArray.ts ===
+const match = ''.match(/ /)
+>match : RegExpMatchArray | null
+>''.match(/ /) : RegExpMatchArray | null
+>''.match : (regexp: string | RegExp) => RegExpMatchArray | null
+>'' : ""
+>match : (regexp: string | RegExp) => RegExpMatchArray | null
+>/ / : RegExp
+
+if (match !== null) {
+>match !== null : boolean
+>match : RegExpMatchArray | null
+>null : null
+
+    const foo: string = match[0]
+>foo : string
+>match[0] : string
+>match : RegExpMatchArray
+>0 : 0
+
+    const bar: string = match[1]
+>bar : string
+>match[1] : string | undefined
+>match : RegExpMatchArray
+>1 : 1
+}
+

tests/cases/compiler/firstMatchRegExpMatchArray.ts

@@ -1,7 +1,9 @@
+// @strict: true
 // @noUncheckedIndexedAccess: true
 
 const match = ''.match(/ /)
 
 if (match !== null) {
     const foo: string = match[0]
+    const bar: string = match[1]
 }