Emit arrow function es6 #1627
Emit arrow function es6 #1627
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| @@ -3210,6 +3210,13 @@ module ts { | |||
| emitTrailingComments(node); | |||
| } | |||
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| function isES6ArrowFunction(node: FunctionLikeDeclaration): boolean { | |||
| if (node.kind === SyntaxKind.ArrowFunction && compilerOptions.target >= ScriptTarget.ES6) { | |||
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return node.kind === ... && compilerOptions.target ...;
yuit
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| @@ -0,0 +1,29 @@ | |||
| //// [emitArrowFunction.ts] | |||
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It would be really helpful if the baseline stated the target, just like the original test.
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Are you still working off of this branch @yuit? |
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@DanielRosenwasser Yes. Fixing up thing now. Almost done |
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Address #1609. I think we should address this issue about arguments in Typescript Spec and align it with ES6 |
| // arguments objects will be inner bound while emitting arrow function natively in ES6, arguments objects | ||
| // will be bound to non-arrow function that contain this arrow function. This results in inconsistent bahaviour. | ||
| // To avoid that we will give an error to users if they use arguments objects in arrow function so that they | ||
| // can explicitly bound arguments objects |
| needToCaptureLexicalThis = true; | ||
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| // When targeting es6, arrow function lexically bind "this" so we do not need to do the work of binding "this" in emitted code | ||
| if (compilerOptions.target >= ScriptTarget.ES6) { |
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Reduce this to one branch, it's already set to false.
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needToCaptureLexicalThis = compilerOptions.target >= ScriptTarget.ES6
| @@ -3263,6 +3263,10 @@ module ts { | |||
| emitTrailingComments(node); | |||
| } | |||
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| function isES6ArrowFunction(node: FunctionLikeDeclaration): boolean { | |||
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Just consolidate this into a local variable.
Never mind, that's not feasible.
| function emitSignatureParametersES6(node: FunctionLikeDeclaration) { | ||
| // Check the node's parameters whether it contains flags indicating that it has no parenthesis around the parameters | ||
| // Preserver no-parenthesis | ||
| if (node && node.flags & NodeFlags.SimpleArrowFunction) { |
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Parens around the & expression please
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Also why would node be undefined?
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Agree with you on that. I just check to make sure but you are right this shouldn't happen
| @@ -3303,6 +3313,20 @@ module ts { | |||
| decreaseIndent(); | |||
| } | |||
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| function emitSignatureParametersForArrow(node: FunctionLikeDeclaration) { | |||
| // Check whether the parameter list needs parentheses and preserve no-parenthesis | |||
| if (node.flags & NodeFlags.SimpleArrowFunction) { | |||
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i do not think you need this flag.
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@DanielRosenwasser Yes they are tabs |
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👍 |
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@basarat I have updated the error message in the last few commits |
sorry. my bad. |
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@basarat no worry :) Thanks for code reviewing! |
Emit Arrow function natively in ES6 and capture "this"