swc/ecmascript/codegen/tests/test262/9681f5d844d7acd0.js

(a)=>b
; // 1 args
(a, b)=>c
; // n args
()=>b
; // 0 args
(a)=>(b)=>c
; // func returns func returns func
(a)=>((b)=>c
    )
; // So these parens are dropped
()=>(b, c)=>d
; // func returns func returns func
(a)=>{
    return b;
};
(a)=>'e'
; // Dropping the parens
Improve swc_ecma_trnasforms (#127) # swc_ecma_ast - Add PrivateName to Expr # swc_ecma_parser - Fix parsing of private name # swc_ecma_transforms ## Hygiene - It correctly tracks `BindingIdentifer` / `IdentifierReference` - Preserve `IdentiferReference` if it conflicts with a `BindingIdentifier` ## Block scoping - It correctly tracks `BindingIdentifer` / `IdentifierReference` ## Fixer - It removes useless parens. - It removes useless `IdentiferReference`s in comma expressions. ## Classes properties - public prooperty - private property ## Class decorators - implemented 2019-01-29 17:56:16 +03:00			`(a)=>b`
Ast (#513) swc_ecmascript: - add `ExprStmt`. - change type of regex.expression and regex.flags. 2019-12-16 12:08:21 +03:00			`; // 1 args`
Improve swc_ecma_trnasforms (#127) # swc_ecma_ast - Add PrivateName to Expr # swc_ecma_parser - Fix parsing of private name # swc_ecma_transforms ## Hygiene - It correctly tracks `BindingIdentifer` / `IdentifierReference` - Preserve `IdentiferReference` if it conflicts with a `BindingIdentifier` ## Block scoping - It correctly tracks `BindingIdentifer` / `IdentifierReference` ## Fixer - It removes useless parens. - It removes useless `IdentiferReference`s in comma expressions. ## Classes properties - public prooperty - private property ## Class decorators - implemented 2019-01-29 17:56:16 +03:00			`(a, b)=>c`
Ast (#513) swc_ecmascript: - add `ExprStmt`. - change type of regex.expression and regex.flags. 2019-12-16 12:08:21 +03:00			`; // n args`
Improve swc_ecma_trnasforms (#127) # swc_ecma_ast - Add PrivateName to Expr # swc_ecma_parser - Fix parsing of private name # swc_ecma_transforms ## Hygiene - It correctly tracks `BindingIdentifer` / `IdentifierReference` - Preserve `IdentiferReference` if it conflicts with a `BindingIdentifier` ## Block scoping - It correctly tracks `BindingIdentifer` / `IdentifierReference` ## Fixer - It removes useless parens. - It removes useless `IdentiferReference`s in comma expressions. ## Classes properties - public prooperty - private property ## Class decorators - implemented 2019-01-29 17:56:16 +03:00			`()=>b`
Ast (#513) swc_ecmascript: - add `ExprStmt`. - change type of regex.expression and regex.flags. 2019-12-16 12:08:21 +03:00			`; // 0 args`
Improve swc_ecma_trnasforms (#127) # swc_ecma_ast - Add PrivateName to Expr # swc_ecma_parser - Fix parsing of private name # swc_ecma_transforms ## Hygiene - It correctly tracks `BindingIdentifer` / `IdentifierReference` - Preserve `IdentiferReference` if it conflicts with a `BindingIdentifier` ## Block scoping - It correctly tracks `BindingIdentifer` / `IdentifierReference` ## Fixer - It removes useless parens. - It removes useless `IdentiferReference`s in comma expressions. ## Classes properties - public prooperty - private property ## Class decorators - implemented 2019-01-29 17:56:16 +03:00			`(a)=>(b)=>c`
Ast (#513) swc_ecmascript: - add `ExprStmt`. - change type of regex.expression and regex.flags. 2019-12-16 12:08:21 +03:00			`; // func returns func returns func`
Improve swc_ecma_trnasforms (#127) # swc_ecma_ast - Add PrivateName to Expr # swc_ecma_parser - Fix parsing of private name # swc_ecma_transforms ## Hygiene - It correctly tracks `BindingIdentifer` / `IdentifierReference` - Preserve `IdentiferReference` if it conflicts with a `BindingIdentifier` ## Block scoping - It correctly tracks `BindingIdentifer` / `IdentifierReference` ## Fixer - It removes useless parens. - It removes useless `IdentiferReference`s in comma expressions. ## Classes properties - public prooperty - private property ## Class decorators - implemented 2019-01-29 17:56:16 +03:00			`(a)=>((b)=>c`
			`)`
Ast (#513) swc_ecmascript: - add `ExprStmt`. - change type of regex.expression and regex.flags. 2019-12-16 12:08:21 +03:00			`; // So these parens are dropped`
Improve swc_ecma_trnasforms (#127) # swc_ecma_ast - Add PrivateName to Expr # swc_ecma_parser - Fix parsing of private name # swc_ecma_transforms ## Hygiene - It correctly tracks `BindingIdentifer` / `IdentifierReference` - Preserve `IdentiferReference` if it conflicts with a `BindingIdentifier` ## Block scoping - It correctly tracks `BindingIdentifer` / `IdentifierReference` ## Fixer - It removes useless parens. - It removes useless `IdentiferReference`s in comma expressions. ## Classes properties - public prooperty - private property ## Class decorators - implemented 2019-01-29 17:56:16 +03:00			`()=>(b, c)=>d`
Ast (#513) swc_ecmascript: - add `ExprStmt`. - change type of regex.expression and regex.flags. 2019-12-16 12:08:21 +03:00			`; // func returns func returns func`
More transcompilers (#49) transforms: - implement String.length simplifier - implement more arithmetic operations - new Date() is side-effect free - implement left.rhs * right - optimize `SeqExpr` while creation - implement es3 - member expression literals pass - implement es2015 - classes pass codegen: - handle infinity correctly - disable comments for testing (it's buggy) ast: - add methods about reserved words 2018-11-14 13:40:46 +03:00			`(a)=>{`
			`return b;`
Ecmascript codegen (#40) Comment is not fully supported yet 2018-10-25 07:17:05 +03:00			`};`
Improve swc_ecma_trnasforms (#127) # swc_ecma_ast - Add PrivateName to Expr # swc_ecma_parser - Fix parsing of private name # swc_ecma_transforms ## Hygiene - It correctly tracks `BindingIdentifer` / `IdentifierReference` - Preserve `IdentiferReference` if it conflicts with a `BindingIdentifier` ## Block scoping - It correctly tracks `BindingIdentifer` / `IdentifierReference` ## Fixer - It removes useless parens. - It removes useless `IdentiferReference`s in comma expressions. ## Classes properties - public prooperty - private property ## Class decorators - implemented 2019-01-29 17:56:16 +03:00			`(a)=>'e'`
Ast (#513) swc_ecmascript: - add `ExprStmt`. - change type of regex.expression and regex.flags. 2019-12-16 12:08:21 +03:00			`; // Dropping the parens`