[jscodeshift] Fix TSC errors and DTS lints

types/jscodeshift/test/js-transforms/call-expression-bind-this-to-arrow-function-expression.ts

@@ -26,7 +26,7 @@
  * var a = c => c;
  *
  */
-import { Transform, MemberExpression, FunctionExpression } from "jscodeshift";
+import { Transform, MemberExpression, FunctionExpression, ArrowFunctionExpression } from "jscodeshift";
 
 const transform: Transform = (file, api) => {
   const j = api.jscodeshift;
@@ -42,7 +42,7 @@ const transform: Transform = (file, api) => {
       // Grab the function body. Since we looked for the CallExpression originally, the "callee.object" would refer
       // to the FunctionExpression that's being called .bind(this) on. We need the body of that function
       // to transform into an ArrowFunctionExpression.
-    	let body = object.body;
+    	let body: ArrowFunctionExpression['body'] = object.body;
       // We can get a bit clever here. If we have a function that consists of a single return statement in it's body,
       // we can transform it to the more compact arrowFunctionExpression (a, b) => a + b, vs (a + b) => { return a + b }
       let useExpression = false;

types/jscodeshift/test/js-transforms/function-expression-to-arrow-function-expression.ts

@@ -25,7 +25,7 @@
  *  	return a + b + this.c;
  * }
  */
-import { Transform } from "jscodeshift";
+import { Transform, ArrowFunctionExpression } from "jscodeshift";
 
 const transform: Transform = (file, api) => {
   const j = api.jscodeshift;
@@ -36,7 +36,7 @@ const transform: Transform = (file, api) => {
     // using the arrowFunctionExpression. As that could potentially have some unintended consequences.
     .filter(p => j(p).find(j.ThisExpression).size() === 0)
     .replaceWith(p => {
-      let body = p.value.body;
+      let body: ArrowFunctionExpression['body'] = p.value.body;
       // We can get a bit clever here. If we have a function that consists of a single return statement in it's body,
       // we can transform it to the more compact arrowFunctionExpression (a, b) => a + b, vs (a + b) => { return a + b }
       let useExpression = false;

types/jscodeshift/test/js-transforms/props-to-destructuring.ts

@@ -135,7 +135,7 @@ const transform: Transform = (file, api) => {
       return j.functionExpression(
         p.value.id,
         p.value.params,
-        j.blockStatement([decl].concat((p.value.body as BlockStatement).body))
+        j.blockStatement([decl].concat(p.value.body.body))
       );
     }
   ).toSource();