stylelint-high-performance-animation/utils/declarationValueIndex.js

Stylelint rule for preventing the use of low performance animation and transition properties.

/**
 * Get the index of a declaration's value
 *
 * @param {Decl} decl
 * @return {int} The index
 */
export default function declarationValueIndex(decl) {
  const beforeColon = decl.toString().indexOf(":");
  const afterColon =
    decl.raw("between").length - decl.raw("between").indexOf(":");

  return beforeColon + afterColon;
}