/
index.ts
140 lines (126 loc) · 3.79 KB
/
index.ts
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import type { Preset } from '@unocss/core'
import { warnOnce } from '@unocss/core'
import type {
IconifyLoaderOptions,
UniversalIconLoader,
} from '@iconify/utils/lib/loader/types'
import { loadIcon } from '@iconify/utils'
import { encodeSvgForCss } from '@iconify/utils/lib/svg/encode-svg-for-css'
import { isNode, isVSCode } from './utils'
import type { IconsOptions } from './types'
import { createCDNLoader } from './cdn'
const COLLECTION_NAME_PARTS_MAX = 3
export { IconsOptions }
export const preset = (options: IconsOptions = {}): Preset => {
const {
scale = 1,
mode = 'auto',
prefix = 'i-',
warn = false,
collections: customCollections,
extraProperties = {},
customizations = {},
autoInstall = false,
layer = 'icons',
unit,
cdn,
} = options
const loaderOptions: IconifyLoaderOptions = {
addXmlNs: true,
scale,
customCollections,
autoInstall,
// avoid warn from @iconify/loader: we'll warn below if not found
warn: undefined,
customizations: {
...customizations,
additionalProps: { ...extraProperties },
trimCustomSvg: true,
async iconCustomizer(collection, icon, props) {
await customizations.iconCustomizer?.(collection, icon, props)
if (unit) {
if (!props.width)
props.width = `${scale}${unit}`
if (!props.height)
props.height = `${scale}${unit}`
}
},
},
}
async function lookupIconLoader(): Promise<UniversalIconLoader> {
if (cdn)
return createCDNLoader(cdn)
if (isNode && !isVSCode) {
try {
return await import('@iconify/utils/lib/loader/node-loader').then(i => i?.loadNodeIcon)
}
catch {}
try {
return require('@iconify/utils/lib/loader/node-loader.cjs')
}
catch {}
}
return loadIcon
}
let iconLoader: UniversalIconLoader
return {
name: '@unocss/preset-icons',
enforce: 'pre',
options,
layers: { icons: -30 },
rules: [[
/^([a-z0-9:-]+)(?:\?(mask|bg|auto))?$/,
async ([full, body, _mode = mode]) => {
let collection = ''
let name = ''
let svg: string | undefined
iconLoader = iconLoader || await lookupIconLoader()
const usedProps = {}
if (body.includes(':')) {
[collection, name] = body.split(':')
svg = await iconLoader(collection, name, { ...loaderOptions, usedProps })
}
else {
const parts = body.split(/-/g)
for (let i = COLLECTION_NAME_PARTS_MAX; i >= 1; i--) {
collection = parts.slice(0, i).join('-')
name = parts.slice(i).join('-')
svg = await iconLoader(collection, name, { ...loaderOptions, usedProps })
if (svg)
break
}
}
if (!svg) {
if (warn)
warnOnce(`failed to load icon "${full}"`)
return
}
const url = `url("data:image/svg+xml;utf8,${encodeSvgForCss(svg)}")`
if (_mode === 'auto')
_mode = svg.includes('currentColor') ? 'mask' : 'bg'
if (_mode === 'mask') {
// Thanks to https://codepen.io/noahblon/post/coloring-svgs-in-css-background-images
return {
'--un-icon': url,
'mask': 'var(--un-icon) no-repeat',
'mask-size': '100% 100%',
'-webkit-mask': 'var(--un-icon) no-repeat',
'-webkit-mask-size': '100% 100%',
'background-color': 'currentColor',
...usedProps,
}
}
else {
return {
'background': `${url} no-repeat`,
'background-size': '100% 100%',
'background-color': 'transparent',
...usedProps,
}
}
},
{ layer, prefix },
]],
}
}
export default preset