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fix: throw clear error when prettier is not installed instead of hanging #782

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fix: throw clear error when prettier is not installed instead of hanging #782

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297bc40
fix: throw clear error when prettier is not installed instead of hanging
isamu Feb 10, 2026
1318b9b
fix: address review comments - check error code and add changeset
isamu Feb 10, 2026
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5 changes: 5 additions & 0 deletions .changeset/fix-prettier-not-installed-hang.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"eslint-plugin-prettier": patch
---

fix: throw clear error when prettier is not installed instead of hanging
11 changes: 11 additions & 0 deletions eslint-plugin-prettier.js
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Original file line number Diff line number Diff line change
Expand Up @@ -211,6 +211,17 @@ const eslintPluginPrettier = {
[sourceCode.ast.type](node) {
if (!prettierFormat) {
// Prettier is expensive to load, so only load it if needed.
try {
require.resolve('prettier');
} catch (error) {
if (error?.code !== 'MODULE_NOT_FOUND') {
throw error;
}
throw new Error(
'eslint-plugin-prettier requires "prettier" package to be installed. ' +
'Please install it with: npm install -D prettier',
);
}
prettierFormat = /** @type {PrettierFormat} */ (
require('synckit').createSyncFn(require.resolve('./worker.mjs'))
);
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