postcss-import/lib/process-content.js

PostCSS plugin to import CSS files

"use strict"

// builtin tooling
const path = require("path")

// placeholder tooling
let sugarss

module.exports = function processContent(
  result,
  content,
  filename,
  options,
  postcss,
) {
  const { plugins } = options
  const ext = path.extname(filename)

  const parserList = []

  // SugarSS support:
  if (ext === ".sss") {
    if (!sugarss) {
      /* c8 ignore next 3 */
      try {
        sugarss = require("sugarss")
      } catch {} // Ignore
    }
    if (sugarss)
      return runPostcss(postcss, content, filename, plugins, [sugarss])
  }

  // Syntax support:
  if (result.opts.syntax?.parse) {
    parserList.push(result.opts.syntax.parse)
  }

  // Parser support:
  if (result.opts.parser) parserList.push(result.opts.parser)
  // Try the default as a last resort:
  parserList.push(null)

  return runPostcss(postcss, content, filename, plugins, parserList)
}

async function runPostcss(postcss, content, filename, plugins, parsers) {
  let lastError
  const processor = postcss(plugins)

  for (const parser of parsers) {
    try {
      return await processor.process(content, {
        from: filename,
        parser,
      })
    } catch (err) {
      lastError = err
    }
  }

  throw lastError
}