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sass-build.js
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sass-build.js
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/* eslint-disable no-console */
import {basename, resolve, join, relative} from 'path';
import glob from 'glob';
import {
writeFileSync,
readFileSync,
outputFileSync,
readJSONSync,
createWriteStream,
lstatSync,
existsSync,
} from 'fs-extra';
import {cp, mkdir} from 'shelljs';
import archiver from 'archiver';
const root = resolve(__dirname, '..');
const intermediateBuild = resolve(root, './build-intermediate');
const srcStyles = resolve(intermediateBuild, './styles');
const srcComponents = resolve(intermediateBuild, './components');
export default function generateSassBuild(destinationDir) {
const classnameTokens = readJSONSync(`${destinationDir}/polaris.tokens.json`);
const buildSass = resolve(destinationDir, 'sass');
const buildStyles = join(buildSass, 'styles');
const global = join(buildStyles, 'global');
const foundation = join(buildStyles, 'foundation');
const shared = join(buildStyles, 'shared');
const components = join(buildStyles, 'components');
const tokens = join(buildStyles, 'polaris-tokens');
mkdir('-p', components, foundation, global, shared, tokens);
cp(join(srcStyles, 'foundation', '*.scss'), foundation);
cp(join(srcStyles, 'polaris-tokens', '*.scss'), tokens);
cp(join(srcStyles, 'global.scss'), join(buildStyles, 'global.scss'));
cp(join(srcStyles, 'foundation.scss'), join(buildStyles, 'foundation.scss'));
cp(join(srcStyles, 'shared.scss'), join(buildStyles, 'shared.scss'));
cp(resolve(srcStyles, '../styles.scss'), join(buildSass, 'styles.scss'));
const dirWithCssModulesGlobals = ['global', 'shared'];
dirWithCssModulesGlobals.forEach((dir) => {
const srcDir = join(srcStyles, dir);
const destDir = join(buildStyles, dir);
const regex = /:global\s*\(([^)]+)\)|:global\s*{\s*([^}]+)\s*}\s*/;
glob.sync(join(srcDir, '/**/*.scss')).forEach((srcFile) => {
const sassFile = srcFile.replace(srcDir, '');
let file = readFileSync(srcFile, 'utf8');
file = file.replace(new RegExp(regex, 'g'), '$1$2');
outputFileSync(join(destDir, sassFile), file);
});
});
glob.sync(join(srcComponents, '*')).forEach((componentPath) => {
if (!lstatSync(componentPath).isDirectory()) {
return;
}
const componentName = basename(componentPath);
const componentSass = resolve(componentPath, `${componentName}.scss`);
if (!existsSync(componentSass)) {
return;
}
const componentBuildDirectory = resolve(components, componentName);
mkdir(componentBuildDirectory);
// Loop through component sass files and copy to build
glob.sync(join(componentPath, '/**/*.scss')).forEach((sassPath) => {
const sassFile = sassPath.replace(`${componentPath}/`, '');
const sassBuild = resolve(componentBuildDirectory, sassFile);
let file = readFileSync(sassPath, 'utf8');
file = namespaceSassClasses(sassPath, file, classnameTokens);
outputFileSync(sassBuild, file);
});
// Create component index with imports
const sassImports = glob
.sync(join(componentBuildDirectory, '**/*.scss'))
.map((absPath) =>
relative(componentBuildDirectory, absPath).replace('.scss', ''),
)
.map((relativePath) => `@import '${componentName}/${relativePath}';`)
.join('\n');
writeFileSync(`${components}/${componentName}.scss`, sassImports);
});
createSassIndex(components);
return generateSassZip(buildSass, destinationDir);
}
// see https://archiverjs.com/docs/
function generateSassZip(sourceDir, destinationDir) {
// eslint-disable-next-line promise/param-names
return new Promise((resolveSass, reject) => {
const output = createWriteStream(join(destinationDir, 'Sass.zip'));
const archive = archiver('zip', {
store: true,
});
output.on('close', () => {
console.log(`Sass zip complete: ${archive.pointer()} total bytes`);
resolveSass();
});
archive.on('error', (err) => {
reject(err);
});
archive.pipe(output);
archive.directory(sourceDir, './');
archive.finalize();
});
}
function createSassIndex(dir) {
const directory = basename(dir);
const sassImports = glob
.sync(join(dir, '**/*.scss'))
.map((absPath) => relative(dir, absPath).replace('.scss', ''))
.map((relativePath) => `@import '${directory}/${relativePath}';`)
.join('\n');
writeFileSync(`${dir}.scss`, sassImports);
}
function namespaceSassClasses(filePath, file, tokens) {
if (basename(filePath, '.scss') === 'variables') {
return file;
}
const sassPath = resolve(filePath);
const namespaces = tokens[sassPath];
if (!namespaces) {
console.log(`File path not in tokens: ${filePath}`);
return file;
}
return Object.keys(namespaces)
.filter(Boolean)
.reduce(
(sass, className) =>
sass.replace(
new RegExp(`\\.${className}(?!-)\\b`, 'g'),
`.${namespaces[className]}`,
),
file,
);
}