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Better warnings

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This commit is contained in:
Amjad Masad 2016-03-10 12:54:02 -08:00
parent 7f4b57a7a4
commit 9f0dbf0234
1 changed files with 6 additions and 3 deletions
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9
packages/babel-traverse/src/scope/index.js
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@ -682,6 +682,7 @@ export default class Scope {
path.traverse(collectorVisitor, state);
this.crawling = false;
this._warnOnFlowBinding = false;
// register assignments
for (let path of state.assignments) {
// register undeclared bindings as globals
@ -712,6 +713,7 @@ export default class Scope {
for (let path of state.constantViolations) {
path.scope.registerConstantViolation(path);
}
this._warnOnFlowBinding = true;
}
push(opts: {
@ -843,10 +845,11 @@ export default class Scope {
}
warnOnFlowBinding(binding) {
if (binding && binding.path.isFlow()) {
if (!this.crawling && this._warnOnFlowBinding && binding && binding.path.isFlow()) {
console.warn(`
You are using Flow declarations as bindings and it is not supported anymore
and will be removed in the next version 6.8.
You or one of the Babel plugins you are using are using Flow declarations as bindings.
Support for this will be removed in version 6.8. To find out the caller, grep for this message
and change it to a \`console.trace()\`.
`);
}
return binding;