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svelte/test/sourcemaps/samples/attached-sourcemap/_config.js

45 lines
1.3 KiB

import MagicString from 'magic-string';
let indent_size = 4;
let comment_multi = true;
function get_processor(tag_name, search, replace) {
return {
[tag_name]: ({ content, filename }) => {
let code = content.slice();
const ms = new MagicString(code);
const idx = ms.original.indexOf(search);
if (idx == -1) throw new Error('search not found in src');
ms.overwrite(idx, idx + search.length, replace, { storeName: true });
// change line + column
const indent = Array.from({ length: indent_size }).join(' ');
ms.prependLeft(idx, '\n'+indent);
const map_opts = { source: filename, hires: true, includeContent: false };
const map = ms.generateMap(map_opts);
const attach_line = (tag_name == 'style' || comment_multi)
? `\n/*# sourceMappingURL=${map.toUrl()} */`
: `\n//# sourceMappingURL=${map.toUrl()}` // only in script
;
code = ms.toString() + attach_line;
indent_size += 2;
if (tag_name == 'script') comment_multi = !comment_multi;
return { code };
}
};
}
export default {
preprocess: [
get_processor('script', 'replace_me_script', 'done_replace_script_1'),
get_processor('script', 'done_replace_script_1', 'done_replace_script_2'),
get_processor('style', '.replace_me_style', '.done_replace_style_1'),
get_processor('style', '.done_replace_style_1', '.done_replace_style_2')
]
};