eslint-plugin-esm
Version:
ESLint plugin for linting ESM (import/export syntax)
31 lines • 4 kB
JavaScript
import fs from "node:fs";
import path from "node:path";
import { create, createRule, getRuleName, getSourceType } from "../common.js";
import { memoize } from "../utils.js";
export const noDirectoryImports = createRule({
name: getRuleName(import.meta.url),
message: "Disallow importing from a directory.",
create: (context) => create(context, check),
});
function check(filename, source) {
if (getSourceType(source) !== "local") {
return false;
}
if (source.endsWith(".") || source.endsWith("./")) {
return true;
}
const absolutePath = path.resolve(path.dirname(filename), source);
if (!absolutePath.startsWith("/")) {
throw new Error(`ESLint plugin internal error. Absolute path incorrect: ${absolutePath}.`);
}
return isDir(absolutePath);
}
const isDir = memoize((filePath) => {
try {
return fs.statSync(filePath).isDirectory();
}
catch {
return false;
}
});
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