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import jQuery from "../core.js";
import isAttached from "../core/isAttached.js";
import getStyles from "./var/getStyles.js";
import rcustomProp from "./var/rcustomProp.js";
import rtrim from "../var/rtrim.js";
function curCSS( elem, name, computed ) {
var ret,
isCustomProp = rcustomProp.test( name );
computed = computed || getStyles( elem );
// getPropertyValue is needed for `.css('--customProperty')` (gh-3144)
if ( computed ) {
ret = computed.getPropertyValue( name ) || computed[ name ];
// trim whitespace for custom property (issue gh-4926)
if ( isCustomProp ) {
// rtrim treats U+000D CARRIAGE RETURN and U+000C FORM FEED
// as whitespace while CSS does not, but this is not a problem
// because CSS preprocessing replaces them with U+000A LINE FEED
// (which *is* CSS whitespace)
// https://www.w3.org/TR/css-syntax-3/#input-preprocessing
ret = ret.replace( rtrim, "$1" );
}
if ( ret === "" && !isAttached( elem ) ) {
ret = jQuery.style( elem, name );
}
}
return ret !== undefined ?
// Support: IE <=9 - 11+
// IE returns zIndex value as an integer.
ret + "" :
ret;
}
export default curCSS;
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