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deduplicate parenthesis around object and function literals (#2953)

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This commit is contained in:
Alex Lam S.L
2018-02-25 02:14:33 +08:00
committed by GitHub
parent 455790202a
commit 52de64cf16
2 changed files with 15 additions and 2 deletions
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7
lib/output.js
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@@ -576,6 +576,7 @@ function OutputStream(options) {
indentation : function() { return indentation },
current_width : function() { return current_col - indentation },
should_break : function() { return options.width && this.current_width() >= options.width },
has_parens : function() { return OUTPUT.slice(-1) == "(" },
newline : newline,
print : print,
space : space,
@@ -683,7 +684,7 @@ function OutputStream(options) {
// a function expression needs parens around it when it's provably
// the first token to appear in a statement.
PARENS(AST_Function, function(output){
if (first_in_statement(output)) {
if (!output.has_parens() && first_in_statement(output)) {
return true;
}
@@ -704,7 +705,9 @@ function OutputStream(options) {
// same goes for an object literal, because otherwise it would be
// interpreted as a block of code.
PARENS(AST_Object, first_in_statement);
PARENS(AST_Object, function(output){
return !output.has_parens() && first_in_statement(output);
});
PARENS(AST_Unary, function(output){
var p = output.parent();