JavaScript: don't extract local constants and variables defined in arrow functions

Units/parser-javascript.r/js-arrow-funcs.d/expected.tags

@@ -5,7 +5,21 @@ f3	input.js	/^let f3 = () => {$/;"	function	signature:()
 f4	input.js	/^let f4 = (...x) => {$/;"	function	signature:(...x)
 f5	input.js	/^let f5 = (x,...y) => {$/;"	function	signature:(x,...y)
 f6	input.js	/^let f6 = (x,y,...z) => {$/;"	function	signature:(x,y,...z)
+a	input.js	/^var a = {}$/;"	variable
+b	input.js	/^var b = {}$/;"	variable
 f7	input.js	/^a.f7 = x => {$/;"	function	variable:a	signature:(x)
 f8	input.js	/^a.f8 = async () => {$/;"	function	variable:a	signature:()
 f9	input.js	/^b.f9 = (async () => {$/;"	function	variable:b	signature:()
 f10	input.js	/^b.f10 = (async x => {$/;"	function	variable:b	signature:(x)
+a	input-0.js	/^function a() {$/;"	function	signature:()
+b	input-0.js	/^  function b() {$/;"	function	function:a	signature:()
+c	input-0.js	/^function c() {$/;"	function	signature:()
+d	input-0.js	/^  let d = () => {$/;"	function	function:c	signature:()
+d2	input-0.js	/^  function d2() {$/;"	function	function:c	signature:()
+e	input-0.js	/^let e = () => {$/;"	function	signature:()
+f	input-0.js	/^  function f() {$/;"	function	function:e	signature:()
+g	input-0.js	/^let g = () => {$/;"	function	signature:()
+h	input-0.js	/^  let h = () => {$/;"	function	function:g	signature:()
+i	input-0.js	/^  let i = x => {$/;"	function	function:g	signature:(x)
+j	input-0.js	/^  let j = () => {$/;"	function	function:g	signature:()
+k	input-0.js	/^function k() {}$/;"	function	signature:()

Units/parser-javascript.r/js-arrow-funcs.d/input-0.js

@@ -0,0 +1,38 @@
+function a() {
+  function b() {
+    let x = 42;
+    return x;
+  }
+  let y = b();
+  return y
+}
+
+function c() {
+  let d = () => {
+    return 42;
+  }
+
+  function d2() {
+    return 1;
+  }
+}
+
+let e = () => {
+  function f() {
+
+  }
+}
+
+let g = () => {
+  let h = () => {
+    return 42;
+  }
+  let i = x => {
+    return x * 42;
+  }
+  let j = () => {
+    return 42;
+  }
+}
+
+function k() {}

Units/parser-javascript.r/js-arrow-funcs.d/input.js

@@ -1,43 +1,58 @@
 var f0 = (x) => {
+    const ignoreme = 1;
     console.log('hello');
 }
 
 var f1 = (x, y) => {
+    var ignoreme = 1;
     console.log('hello');
 }
 
 const f2 = x => {
+    let ignoreme = 1;
     console.log('hello');
 }
 
 let f3 = () => {
+    const ignoreme = 1;
     console.log('hello');
 }
 
 let f4 = (...x) => {
+    const ignoreme = 1;
     console.log('hello');
 }
 
 let f5 = (x,...y) => {
+    const ignoreme = 1;
     console.log('hello');
 }
 
 let f6 = (x,y,...z) => {
+    const ignoreme = 1;
     console.log('hello');
 }
 
+// Make this input acceptable as the input for nodejs.
+var a = {}
+var b = {}
+
 a.f7 = x => {
+    const ignoreme = 1;
     console.log('hello');
 }
 
 a.f8 = async () => {
+    const ignoreme = 1;
     console.log('hello');
 }
 
 b.f9 = (async () => {
+    const ignoreme = 1;
     console.log('hello');
 })
 
 b.f10 = (async x => {
+    const ignoreme = 1;
     console.log('hello');
 })

parsers/jscript.c

@@ -2908,6 +2908,12 @@
 				state->indexForName = makeFunctionTag (name, sig, false);
 			else
 				convertToFunction (state->indexForName, vStringValue (sig));
+
+			readToken (token);
+			if (isType (token, TOKEN_OPEN_CURLY))
+				parseBlock (token, state->indexForName);
+			else if (! isType (token, TOKEN_SEMICOLON))
+				state->isTerminated = false;
 		}
 		vStringDelete (sig);
 	}
@@ -2942,6 +2948,15 @@
 
 				vStringDelete (sig);
 				sig = NULL;
+				readToken (token);
+				if (isType (token, TOKEN_OPEN_CURLY))
+				{
+					parseBlock (token, state->indexForName);
+					/* here we're at the close curly but it's part of the arrow
+					 * function body, so skip over not to confuse further code */
+					readTokenFull(token, true, NULL);
+					state->isTerminated = isType (token, TOKEN_SEMICOLON);
+				}
 			}
 		}
 		if (isType (token, TOKEN_CLOSE_CURLY))