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Add ecma5 flag for codegen

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This commit is contained in:
Anthony Van de Gejuchte
2016-06-26 19:44:22 +02:00
committed by Richard van Velzen
parent 63c432f4fa
commit 54a783ba84
3 changed files with 69 additions and 5 deletions
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9
lib/output.js
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@@ -67,7 +67,8 @@ function OutputStream(options) {
screw_ie8 : false,
preamble : null,
quote_style : 0,
keep_quoted_props: false
keep_quoted_props: false,
ecma : 5,
}, true);
var indentation = 0;
@@ -80,7 +81,11 @@ function OutputStream(options) {
return str.replace(/[\ud800-\udbff][\udc00-\udfff]|[\u0000-\u001f\u007f-\uffff]/g, function(ch) {
var code = get_full_char_code(ch, 0).toString(16);
if ((identifier && code.length === 1) || code.length > 4) {
if ((identifier && code.length === 1 && !options.es5) || code.length > 4) {
if (options.ecma < 6) {
return "\\u" + ch.charCodeAt(0).toString(16) + "\\u"
+ ch.charCodeAt(1).toString(16);
}
return "\\u{" + code + "}";
} else if (code.length <= 2 && !identifier) {
while (code.length < 2) code = "0" + code;