2 * Copyright (C) 2018 Nick Downing <nick@ndcode.org>
3 * SPDX-License-Identifier: MIT
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to
7 * deal in the Software without restriction, including without limitation the
8 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
9 * sell copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 let BuildCache = require('@ndcode/build_cache')
25 let disk_build = require('@ndcode/disk_build')
26 let fs = require('fs')
27 let sass = require('sass')
28 let path = require('path')
29 let util = require('util')
31 let fs_readFile = util.promisify(fs.readFile)
32 let fs_writeFile = util.promisify(fs.writeFile)
34 let SassCSSCache = function(root, diag1, diag) {
35 if (!this instanceof SassCSSCache)
36 throw new Error('SassCSSCache is a constructor')
37 BuildCache.call(this, diag)
39 this.root = root || '.'
42 SassCSSCache.prototype = Object.create(BuildCache.prototype)
44 SassCSSCache.prototype.build = async function(key, result) {
45 let render = await disk_build(
47 async temp_pathname => {
48 let render = await sass.compileAsync(
50 {loadPaths: [path.posix.dirname(key)], style: 'compressed'}
57 return render.loadedUrls
61 result.deps = result.deps.concat(render.deps)
62 result.value = await fs_readFile(render.pathname)
65 module.exports = SassCSSCache