V8intrinsic syntax plugin (#10148)

* feat: v8intrinsic syntax plugin

Implement V8 Intrinsic Syntax Extension. Here we check the execution branch inside the parseSubscript to make sure the V8IntrinsicIdentifier is immediately followed by a call expression.

* feat: disable combining placeholders and v8intrisic

per https://github.com/babel/babel/issues/10104#issuecomment-506950969

* test: add more error cases

* refactor: parse v8 intrinsic in parseExprAtom

This approach is identical to V8’s implementation. Move the test cases as the behaviour changes.

* fix: plugin-name typo

* test: add yield-expression test case

* feat: require startsExpr on modulo for v8intrinsic

* perf: skip eof and braceR check as they must return false

* Print V8IntrinsicIdentifier

* feat: add v8intrinsic to parser typings

* Add generated type helpers

* fix: incorrect type definition

* fix: allow V8IntrinsicIdentifier to be callee

packages/babel-parser/src/plugin-utils.js

@@ -69,6 +69,10 @@ export function validatePlugins(plugins: PluginList) {
     throw new Error("Cannot combine flow and typescript plugins.");
   }
 
+  if (hasPlugin(plugins, "placeholders") && hasPlugin(plugins, "v8intrinsic")) {
+    throw new Error("Cannot combine placeholders and v8intrinsic plugins.");
+  }
+
   if (
     hasPlugin(plugins, "pipelineOperator") &&
     !PIPELINE_PROPOSALS.includes(
@@ -89,6 +93,7 @@ import flow from "./plugins/flow";
 import jsx from "./plugins/jsx";
 import typescript from "./plugins/typescript";
 import placeholders from "./plugins/placeholders";
+import v8intrinsic from "./plugins/v8intrinsic";
 
 // NOTE: order is important. estree must come first; placeholders must come last.
 export const mixinPlugins: { [name: string]: MixinPlugin } = {
@@ -96,6 +101,7 @@ export const mixinPlugins: { [name: string]: MixinPlugin } = {
   jsx,
   flow,
   typescript,
+  v8intrinsic,
   placeholders,
 };