astro/scripts/utils/svelte-plugin.js
Nate Moore c93201a909
Refactor astro export map, add source-map-support (#161)
* fix: add svelte plugin for esbuild, remove precompiled svelte components

* refactor: public export map, public types

* feat: add source-map-support to common code paths

* chore: move new "exports" to "imports" map, add internal types

* Include outPath in error logging for bad load status, and drop error stack (#163)

* Include outPath in the error logging for bad load status

* Discard error stack since it seems not useful

* feat: improve build error logging

* refactor: use object param for writeResult

Co-authored-by: Kevin (Kun) "Kassimo" Qian <kevinkassimo@gmail.com>
2021-05-03 13:18:08 -05:00

60 lines
2.1 KiB
JavaScript

// @ts-nocheck
import { compile } from 'svelte/compiler';
import { relative, isAbsolute, join, dirname } from 'path';
import { promises as fs } from 'fs';
const convertMessage = ({ message, start, end, filename, frame }) => ({
text: message,
location: start && end && {
file: filename,
line: start.line,
column: start.column,
length: start.line === end.line ? end.column - start.column : 0,
lineText: frame,
},
})
const handleLoad = async (args, generate) => {
const { path } = args;
const source = await fs.readFile(path, 'utf8');
const filename = relative(process.cwd(), path)
try {
let compileOptions = { css: false, generate, hydratable: true };
let { js, warnings } = compile(source, { ...compileOptions, filename })
let contents = js.code + `\n//# sourceMappingURL=` + js.map.toUrl()
return { loader: 'js', contents, resolveDir: dirname(path), warnings: warnings.map(w => convertMessage(w)) };
} catch (e) {
return { errors: [convertMessage(e)] }
}
}
export default function sveltePlugin() {
return {
name: 'svelte-esbuild',
setup(build) {
build.onResolve({ filter: /\.svelte$/ }, args => {
let path = args.path.replace(/\.(?:client|server)/, '');
path = isAbsolute(path) ? path : join(args.resolveDir, path)
if (/\.client\.svelte$/.test(args.path)) {
return {
path,
namespace: 'svelte:client',
}
}
if (/\.server\.svelte$/.test(args.path)) {
return {
path,
namespace: 'svelte:server',
}
}
});
build.onLoad({ filter: /.*/, namespace: 'svelte:client' }, (args) => handleLoad(args, 'dom'))
build.onLoad({ filter: /.*/, namespace: 'svelte:server' }, (args) => handleLoad(args, 'ssr'))
},
}
}