import { serialize, compile, middleware, stringify, rulesheet } from 'stylis';
import { prefixerPlugin } from './stylis/prefixerPlugin.esm.js';
import { cssifyObject } from './utils/cssifyObject.esm.js';

function compileKeyframeRule(keyframeObject) {
  let css = '';
  // eslint-disable-next-line guard-for-in
  for (const percentage in keyframeObject) {
    css += `${percentage}{${cssifyObject(keyframeObject[percentage])}}`;
  }
  return css;
}
/**
 * Creates CSS rules for insertion from passed CSS.
 */
function compileKeyframesCSS(keyframeName, keyframeCSS) {
  const cssRule = `@keyframes ${keyframeName} {${keyframeCSS}}`;
  const rules = [];
  serialize(compile(cssRule), middleware([stringify, prefixerPlugin,
  // 💡 we are using `.insertRule()` API for DOM operations, which does not support
  // insertion of multiple CSS rules in a single call. `rulesheet` plugin extracts
  // individual rules to be used with this API
  rulesheet(rule => rules.push(rule))]));
  return rules;
}

export { compileKeyframeRule, compileKeyframesCSS };
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