Use a for-of loop for a dense array instead of iterating over keys and then indexing

Andy Hanson · Andy Hanson · commit fcb4c2ba0f1a · 2016-10-03T08:32:37.000-07:00
diff --git a/src/compiler/transformers/es6.ts b/src/compiler/transformers/es6.ts
@@ -2308,8 +2308,7 @@ namespace ts {
                         extraVariableDeclarations = [];
                     }
                     // hoist collected variable declarations
-                    for (const name in currentState.hoistedLocalVariables) {
-                        const identifier = currentState.hoistedLocalVariables[name];
+                    for (const identifier of currentState.hoistedLocalVariables) {
                         extraVariableDeclarations.push(createVariableDeclaration(identifier));
                     }
                 }

Original file line number	Diff line number	Diff line change
`@@ -2308,8 +2308,7 @@ namespace ts {`
`2308`	`2308`	`extraVariableDeclarations = [];`
`2309`	`2309`	`}`
`2310`	`2310`	`// hoist collected variable declarations`
`2311`		`- for (const name in currentState.hoistedLocalVariables) {`
`2312`		`- const identifier = currentState.hoistedLocalVariables[name];`
	`2311`	`+ for (const identifier of currentState.hoistedLocalVariables) {`
`2313`	`2312`	`extraVariableDeclarations.push(createVariableDeclaration(identifier));`
`2314`	`2313`	`}`
`2315`	`2314`	`}`