/
scss.ts
66 lines (52 loc) · 1.57 KB
/
scss.ts
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import { Result } from 'sass';
import { Transformer, Processed, Options } from '../types';
import { getIncludePaths } from '../modules/getIncludePaths';
import { importAny } from '../modules/importAny';
let sass: Options.Sass['implementation'];
type ResolveResult = {
code: string;
map: string | undefined;
dependencies: string[];
};
function getResultForResolve(result: Result): ResolveResult {
return {
code: result.css.toString(),
map: result.map?.toString(),
dependencies: result.stats.includedFiles,
};
}
const transformer: Transformer<Options.Sass> = async ({
content,
filename,
options = {},
}) => {
let implementation = options?.implementation ?? sass;
if (implementation == null) {
const mod = await importAny('sass', 'node-sass');
// eslint-disable-next-line no-multi-assign
implementation = sass = mod.default;
}
const { renderSync, prependData, ...restOptions } = {
...options,
includePaths: getIncludePaths(filename, options.includePaths),
outFile: `${filename}.css`,
};
const sassOptions = {
...restOptions,
data: prependData ? `${prependData}${content}` : content,
};
// scss errors if passed an empty string
if (sassOptions.data.length === 0) {
return { code: '' };
}
if (renderSync) {
return getResultForResolve(implementation.renderSync(sassOptions));
}
return new Promise<Processed>((resolve, reject) => {
implementation.render(sassOptions, (err, result) => {
if (err) return reject(err);
resolve(getResultForResolve(result));
});
});
};
export { transformer };