Added jsescOptions to Numeric Literals (#11028)

* Added jsescOptions to Numeric Literals

* Added tests and hexadecimal opts to NumericLiterals

* Fixed the bug of every numeric literal being coverted to hex

* Added conditions when jsesc should be applied

* Removed numbers and lowercaseHex from format object

* Added newline to test of jsonEscape (to exclude the change)

* Modified conditions to apply jsesc

* Made the required changes.

* Using node.value instead of value

packages/babel-generator/src/generators/types.js

@@ -120,8 +120,11 @@ export function NullLiteral() {
 
 export function NumericLiteral(node: Object) {
   const raw = this.getPossibleRaw(node);
+  const opts = this.format.jsescOption;
   const value = node.value + "";
-  if (raw == null) {
+  if (opts.numbers) {
+    this.number(jsesc(node.value, opts));
+  } else if (raw == null) {
     this.number(value); // normalize
   } else if (this.format.minified) {
     this.number(raw.length < value.length ? raw : value);

packages/babel-generator/test/fixtures/escapes/numeric-literals/input.js

@@ -0,0 +1 @@
+let x = 42

packages/babel-generator/test/fixtures/escapes/numeric-literals/options.json

@@ -0,0 +1,6 @@
+{
+  "jsescOption": {
+    "numbers": "hexadecimal",
+    "lowercaseHex": true
+  }
+}

packages/babel-generator/test/fixtures/escapes/numeric-literals/output.js

@@ -0,0 +1 @@
+let x = 0x2a;