{"version":3,"file":"helper.cjs","sources":["../../../components/anchor/helper.ts"],"sourcesContent":["export interface ScrollElement {\n  scrollTo(x: number, y: number): void,\n  [prop: string]: any\n}\n\nexport function animateScrollTo(\n  el: ScrollElement,\n  from: number,\n  to: number,\n  duration: number,\n  callback: unknown,\n): void {\n  const distance = to - from\n  const step = Math.ceil((distance / duration) * 16)\n\n  const end = () => {\n    typeof callback === 'function' && callback()\n  }\n\n  if (!distance) {\n    end()\n    return\n  }\n\n  if (duration <= 0) {\n    el.scrollTo(0, to)\n    end()\n    return\n  }\n\n  let current = from\n\n  const scroll = () => {\n    if (!distance) return\n\n    current = current + step\n\n    if ((to - current) / distance <= 0) {\n      current = to\n    }\n\n    el.scrollTo(0, current)\n\n    if (current === to) {\n      end()\n    } else {\n      requestAnimationFrame(scroll)\n    }\n  }\n\n  scroll()\n}\n"],"names":["animateScrollTo","el","from","to","duration","callback","distance","step","end","current","scroll"],"mappings":"gFAKO,SAASA,EACdC,EACAC,EACAC,EACAC,EACAC,EACM,CACN,MAAMC,EAAWH,EAAKD,EAChBK,EAAO,KAAK,KAAMD,EAAWF,EAAY,EAAE,EAE3CI,EAAM,IAAM,CACT,OAAAH,GAAa,YAAcA,EAAS,CAC7C,EAEA,GAAI,CAACC,EAAU,CACTE,EAAA,EACJ,MAAA,CAGF,GAAIJ,GAAY,EAAG,CACdH,EAAA,SAAS,EAAGE,CAAE,EACbK,EAAA,EACJ,MAAA,CAGF,IAAIC,EAAUP,EAEd,MAAMQ,EAAS,IAAM,CACdJ,IAELG,EAAUA,EAAUF,GAEfJ,EAAKM,GAAWH,GAAY,IACrBG,EAAAN,GAGTF,EAAA,SAAS,EAAGQ,CAAO,EAElBA,IAAYN,EACVK,EAAA,EAEJ,sBAAsBE,CAAM,EAEhC,EAEOA,EAAA,CACT"}