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Let function optimize better by using a boolean.

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This commit is contained in:
Logan Smyth 2016-04-17 15:11:12 -07:00
parent eb455dff85
commit ca8556e36f
1 changed files with 6 additions and 4 deletions
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10
packages/babel-generator/src/printer.js
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@ -182,11 +182,11 @@ export default class Printer extends Buffer {
}
printTrailingComments(node, parent) {
this.printComments(this.getComments("trailingComments", node, parent));
this.printComments(this.getComments(false, node, parent));
}
printLeadingComments(node, parent) {
this.printComments(this.getComments("leadingComments", node, parent));
this.printComments(this.getComments(true, node, parent));
}
printInnerComments(node, indent = true) {
@ -250,8 +250,10 @@ export default class Printer extends Buffer {
this.newline(lines);
}
getComments(key, node) {
return (node && node[key]) || [];
getComments(leading, node) {
// Note, we use a boolean flag here instead of passing in the attribute name as it is faster
// because this is called extremely frequently.
return (node && (leading ? node.leadingComments : node.trailingComments)) || [];
}
shouldPrintComment(comment) {