chakra-ui/packages/react/src/styled-system/preflight.ts

import { isObject } from "../utils"
import type { CssProperties } from "./css.types"
import type { PreflightConfig } from "./types"

export function createPreflight(options: PreflightConfig) {
  const { preflight } = options
  if (!preflight) return {}

  const { scope = "", level = "parent" } = isObject(preflight) ? preflight : {}

  let selector = ""

  if (scope && level === "parent") {
    selector = `${scope} `
  } else if (scope && level === "element") {
    selector = `&${scope}`
  }

  const scoped: Record<string, CssProperties> = {
    "*": {
      margin: "0px",
      padding: "0px",
      font: "inherit",
      wordWrap: "break-word",
      WebkitTapHighlightColor: "transparent",
    },
    "*, *::before, *::after, *::backdrop": {
      boxSizing: "border-box",
      borderWidth: "0px",
      borderStyle: "solid",
      borderColor: "var(--global-color-border, currentColor)",
    },
    hr: {
      height: "0px",
      color: "inherit",
      borderTopWidth: "1px",
    },
    body: {
      minHeight: "100dvh",
      position: "relative",
    },
    img: {
      borderStyle: "none",
    },
    "img, svg, video, canvas, audio, iframe, embed, object": {
      display: "block",
      verticalAlign: "middle",
    },
    iframe: { border: "none" },
    "img, video": { maxWidth: "100%", height: "auto" },
    "p, h1, h2, h3, h4, h5, h6": { overflowWrap: "break-word" },
    "ol, ul": { listStyle: "none" },
    "code, kbd, pre, samp": { fontSize: "1em" },
    "button, [type='button'], [type='reset'], [type='submit']": {
      WebkitAppearance: "button",
      backgroundColor: "transparent",
      backgroundImage: "none",
    },
    "button, input, optgroup, select, textarea": { color: "inherit" },
    "button, select": { textTransform: "none" },
    table: {
      textIndent: "0px",
      borderColor: "inherit",
      borderCollapse: "collapse",
    },
    "*::placeholder": {
      opacity: "unset",
      color: "#9ca3af",
      userSelect: "none",
    },
    textarea: {
      resize: "vertical",
    },
    summary: {
      display: "list-item",
    },
    small: {
      fontSize: "80%",
    },
    "sub, sup": {
      fontSize: "75%",
      lineHeight: 0,
      position: "relative",
      verticalAlign: "baseline",
    },
    sub: {
      bottom: "-0.25em",
    },
    sup: {
      top: "-0.5em",
    },
    dialog: {
      padding: "0px",
    },
    a: {
      color: "inherit",
      textDecoration: "inherit",
    },
    "abbr:where([title])": {
      textDecoration: "underline dotted",
    },
    "b, strong": {
      fontWeight: "bolder",
    },
    "code, kbd, samp, pre": {
      fontSize: "1em",
      "--font-mono-fallback":
        "ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New'",
      fontFamily: "var(--global-font-mono, var(--font-mono-fallback))",
    },
    'input[type="text"], input[type="email"], input[type="search"], input[type="password"]':
      {
        WebkitAppearance: "none",
        MozAppearance: "none",
      },
    "input[type='search']": {
      WebkitAppearance: "textfield",
      outlineOffset: "-2px",
    },
    "::-webkit-search-decoration, ::-webkit-search-cancel-button": {
      WebkitAppearance: "none",
    },
    "::-webkit-file-upload-button": {
      WebkitAppearance: "button",
      font: "inherit",
    },
    'input[type="number"]::-webkit-inner-spin-button, input[type="number"]::-webkit-outer-spin-button':
      {
        height: "auto",
      },
    "input[type='number']": {
      MozAppearance: "textfield",
    },
    ":-moz-ui-invalid": {
      boxShadow: "none",
    },
    ":-moz-focusring": {
      outline: "auto",
    },
    "[hidden]:where(:not([hidden='until-found']))": {
      display: "none !important",
    },
  }

  const preflightCss: Record<string, CssProperties> = {
    [scope || "html"]: {
      lineHeight: 1.5,
      "--font-fallback":
        "ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji'",
      WebkitTextSizeAdjust: "100%",
      WebkitFontSmoothing: "antialiased",
      MozOsxFontSmoothing: "grayscale",
      textRendering: "optimizeLegibility",
      touchAction: "manipulation",
      MozTabSize: "4",
      tabSize: "4",
      fontFamily: "var(--global-font-body, var(--font-fallback))",
    },
  }

  if (level === "element") {
    const modified = Object.entries(scoped).reduce<any>((acc, [k, v]) => {
      acc[k] = { [selector]: v }
      return acc
    }, {})
    Object.assign(preflightCss, modified)
  } else if (selector) {
    preflightCss[selector] = scoped as any
  } else {
    Object.assign(preflightCss, scoped)
  }

  return preflightCss
}