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Fix Flow return types on arrow functions (#124)

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* fix: arrow return type on next line is valid

https://github.com/babel/babel-eslint/issues/348

* fix: arrow on line after return type annotation is invalid

* lint
This commit is contained in:
Dan Harper
2016-09-15 18:27:11 +01:00
committed by Daniel Tschinder
parent abf6ca8e5e
commit dc3036627b
6 changed files with 218 additions and 1 deletions
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6
src/parser/expression.js
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@@ -577,7 +577,7 @@ pp.parseParenAndDistinguishExpression = function (startPos, startLoc, canBeArrow
this.expect(tt.parenR);
let arrowNode = this.startNodeAt(startPos, startLoc);
if (canBeArrow && !this.canInsertSemicolon() && (arrowNode = this.parseArrow(arrowNode))) {
if (canBeArrow && this.shouldParseArrow() && (arrowNode = this.parseArrow(arrowNode))) {
for (let param of exprList) {
if (param.extra && param.extra.parenthesized) this.unexpected(param.extra.parenStart);
}
@@ -613,6 +613,10 @@ pp.parseParenAndDistinguishExpression = function (startPos, startLoc, canBeArrow
return val;
};
pp.shouldParseArrow = function () {
return !this.canInsertSemicolon();
};
pp.parseArrow = function (node) {
if (this.eat(tt.arrow)) {
return node;