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improve performance through makePredicate() (#3048)

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This commit is contained in:
Alex Lam S.L
2018-04-03 15:15:01 +08:00
committed by GitHub
parent e67553fa55
commit 81603ecd15
5 changed files with 84 additions and 118 deletions
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6
lib/output.js
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@@ -280,7 +280,7 @@ function OutputStream(options) {
might_need_semicolon = false;
if (prev == ":" && ch == "}" || (!ch || ";}".indexOf(ch) < 0) && prev != ";") {
if (options.semicolons || requireSemicolonChars(ch)) {
if (options.semicolons || requireSemicolonChars[ch]) {
OUTPUT += ";";
current_col++;
current_pos++;
@@ -1244,7 +1244,7 @@ function OutputStream(options) {
var expr = self.expression;
expr.print(output);
var prop = self.property;
if (output.option("ie8") && RESERVED_WORDS(prop)) {
if (output.option("ie8") && RESERVED_WORDS[prop]) {
output.print("[");
output.add_mapping(self.end);
output.print_string(prop);
@@ -1356,7 +1356,7 @@ function OutputStream(options) {
output.print_string(key);
} else if ("" + +key == key && key >= 0) {
output.print(make_num(key));
} else if (RESERVED_WORDS(key) ? !output.option("ie8") : is_identifier_string(key)) {
} else if (RESERVED_WORDS[key] ? !output.option("ie8") : is_identifier_string(key)) {
if (quote && output.option("keep_quoted_props")) {
output.print_string(key, quote);
} else {