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'use strict'
let Document = require('./document')
let LazyResult = require('./lazy-result')
let NoWorkResult = require('./no-work-result')
let Root = require('./root')
class Processor {
constructor(plugins = []) {
this.version = '8.5.3'
this.plugins = this.normalize(plugins)
}
normalize(plugins) {
let normalized = []
for (let i of plugins) {
if (i.postcss === true) {
i = i()
} else if (i.postcss) {
i = i.postcss
}
if (typeof i === 'object' && Array.isArray(i.plugins)) {
normalized = normalized.concat(i.plugins)
} else if (typeof i === 'object' && i.postcssPlugin) {
normalized.push(i)
} else if (typeof i === 'function') {
normalized.push(i)
} else if (typeof i === 'object' && (i.parse || i.stringify)) {
if (process.env.NODE_ENV !== 'production') {
throw new Error(
'PostCSS syntaxes cannot be used as plugins. Instead, please use ' +
'one of the syntax/parser/stringifier options as outlined ' +
'in your PostCSS runner documentation.'
)
}
} else {
throw new Error(i + ' is not a PostCSS plugin')
}
}
return normalized
}
process(css, opts = {}) {
if (
!this.plugins.length &&
!opts.parser &&
!opts.stringifier &&
!opts.syntax
) {
return new NoWorkResult(this, css, opts)
} else {
return new LazyResult(this, css, opts)
}
}
use(plugin) {
this.plugins = this.plugins.concat(this.normalize([plugin]))
return this
}
}
module.exports = Processor
Processor.default = Processor
Root.registerProcessor(Processor)
Document.registerProcessor(Processor)