eslint-plugin-unicorn-x/rules/utils/assert-token.js

More than 100 powerful ESLint rules

const ISSUE_LINK_PREFIX =
	'https://github.com/es-tooling/eslint-plugin-unicorn-x/issues/new?';

export default function assertToken(token, {test, expected, ruleId}) {
	if (test?.(token)) {
		return;
	}

	expected = Array.isArray(expected) ? expected : [expected];
	expected = expected.map((expectedToken) =>
		typeof expectedToken === 'string' ? {value: expectedToken} : expectedToken,
	);

	if (
		!test &&
		expected.some((expectedToken) =>
			Object.entries(expectedToken).every(
				([key, value]) => token[key] === value,
			),
		)
	) {
		return;
	}

	const actual = `'${JSON.stringify({value: token.value, type: token.type})}'`;
	expected = expected
		.map((expectedToken) => `'${JSON.stringify(expectedToken)}'`)
		.join(' or ');
	const title = `\`${ruleId}\`: Unexpected token ${actual}`;
	const issueLink = `${ISSUE_LINK_PREFIX}title=${encodeURIComponent(title)}`;
	const message = `Expected token ${expected}, got ${actual}.\nPlease open an issue at ${issueLink}.`;

	throw new Error(message);
}