hexo/node_modules/node-sass/scripts/install.js

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2023-10-03 11:14:36 +08:00
/*!
* node-sass: scripts/install.js
*/
var fs = require('fs'),
eol = require('os').EOL,
path = require('path'),
fetch = require('make-fetch-happen'),
sass = require('../lib/extensions'),
downloadOptions = require('./util/downloadoptions');
/**
* Download file, if succeeds save, if not delete
*
* @param {String} url
* @param {String} dest
* @param {Function} cb
* @api private
*/
function download(url, dest, cb) {
var reportError = function(err) {
cb(['Cannot download "', url, '": ', eol, eol,
typeof err.message === 'string' ? err.message : err, eol, eol,
'Hint: If github.com is not accessible in your location', eol,
' try setting a proxy via HTTP_PROXY, e.g. ', eol, eol,
' export HTTP_PROXY=http://example.com:1234',eol, eol,
'or configure npm proxy via', eol, eol,
' npm config set proxy http://example.com:8080'].join(''));
};
var successful = function(response) {
return response.status >= 200 && response.status < 300;
};
console.log('Downloading binary from', url);
try {
fetch(url, downloadOptions()).then(function (response) {
return response.buffer();
}).then(function (buffer) {
fs.createWriteStream(dest).on('error', cb).end(buffer, cb);
console.log('Download complete');
}).catch(function(err) {
if(!successful(err)) {
reportError(['HTTP error', err.code, err.message].join(' '));
} else {
reportError(err);
}
});
} catch (err) {
cb(err);
}
}
/**
* Check and download binary
*
* @api private
*/
function checkAndDownloadBinary() {
if (process.env.SKIP_SASS_BINARY_DOWNLOAD_FOR_CI) {
console.log('Skipping downloading binaries on CI builds');
return;
}
var cachedBinary = sass.getCachedBinary(),
cachePath = sass.getBinaryCachePath(),
binaryPath = sass.getBinaryPath();
if (sass.hasBinary(binaryPath)) {
console.log('node-sass build', 'Binary found at', binaryPath);
return;
}
try {
fs.mkdirSync(path.dirname(binaryPath), {recursive: true});
} catch (err) {
console.error('Unable to save binary', path.dirname(binaryPath), ':', err);
return;
}
if (cachedBinary) {
console.log('Cached binary found at', cachedBinary);
fs.createReadStream(cachedBinary).pipe(fs.createWriteStream(binaryPath));
return;
}
download(sass.getBinaryUrl(), binaryPath, function(err) {
if (err) {
console.error(err);
return;
}
console.log('Binary saved to', binaryPath);
cachedBinary = path.join(cachePath, sass.getBinaryName());
if (cachePath) {
console.log('Caching binary to', cachedBinary);
try {
fs.mkdirSync(path.dirname(cachedBinary), {recursive: true});
fs.createReadStream(binaryPath)
.pipe(fs.createWriteStream(cachedBinary))
.on('error', function (err) {
console.log('Failed to cache binary:', err);
});
} catch (err) {
console.log('Failed to cache binary:', err);
}
}
});
}
/**
* If binary does not exist, download it
*/
checkAndDownloadBinary();