jingrow/esbuild-plugin-postcss2
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Workaround for evanw/esbuild#1101

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esbuild is unable to find the file, even though it does exist. This only happens for files in a directory with several other entries, so by creating a unique directory name per file on every build, we guarantee that there will only every be a single file present within the directory, circumventing the esbuild issue.
This commit is contained in:
Timo Stamm 2021-08-11 13:04:32 +02:00
parent 8735128467
commit 767df77220
1 changed files with 37 additions and 13 deletions
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50
src/index.ts
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@ -83,21 +83,36 @@ const postCSSPlugin = ({
const sourceExt = path.extname(sourceFullPath);
const sourceBaseName = path.basename(sourceFullPath, sourceExt);
const sourceDir = path.dirname(sourceFullPath);
const sourceRelDir = path.relative(path.dirname(rootDir), sourceDir);
const isModule = sourceBaseName.match(/\.module$/);
const tmpDir = path.resolve(tmpDirPath, sourceRelDir);
let tmpFilePath = path.resolve(
tmpDir,
`${Date.now()}-${sourceBaseName}.css`
);
// When CSS is an entry-point we don't want to append Date.now()
if (args.kind === "entry-point")
tmpFilePath = path.resolve(tmpDir, `${sourceBaseName}.css`);
await ensureDir(tmpDir);
let tmpFilePath: string;
if (args.kind === "entry-point") {
// For entry points, we use <tempdir>/<path-within-project-root>/<file-name>.css
const sourceRelDir = path.relative(
path.dirname(rootDir),
path.dirname(sourceFullPath)
);
tmpFilePath = path.resolve(
tmpDirPath,
sourceRelDir,
`${sourceBaseName}.css`
);
await ensureDir(path.dirname(tmpFilePath));
} else {
// For others, we use <tempdir>/<unique-directory-name>/<file-name>.css
//
// This is a workaround for the following esbuild issue:
// https://github.com/evanw/esbuild/issues/1101
//
// esbuild is unable to find the file, even though it does exist. This only
// happens for files in a directory with several other entries, so by
// creating a unique directory name per file on every build, we guarantee
// that there will only every be a single file present within the directory,
// circumventing the esbuild issue.
const uniqueTmpDir = path.resolve(tmpDirPath, uniqueId());
tmpFilePath = path.resolve(uniqueTmpDir, `${sourceBaseName}.css`);
}
await ensureDir(path.dirname(tmpFilePath));
const fileContent = await readFile(sourceFullPath);
let css = sourceExt === ".css" ? fileContent : "";
@ -199,4 +214,13 @@ function getSassImpl() {
return require(impl);
}
let idCounter = 0;
/**
* Generates an id that is guaranteed to be unique for the Node.JS instance.
*/
function uniqueId(): string {
return Date.now().toString(16) + (idCounter++).toString(16);
}
export default postCSSPlugin;