@truenine/eslint9-config/dist/rules/code-style/prefer-separate-try-catch.mjs

ESLint 9 configuration package for Compose Client projects with TypeScript, Vue, and modern JavaScript support

//#region src/rules/code-style/prefer-separate-try-catch.ts
const rule = {
	meta: {
		type: "layout",
		docs: {
			description: "Enforce try, catch, and finally blocks to be on separate lines",
			recommended: false
		},
		fixable: "whitespace",
		messages: {
			separateCatch: "Catch clause should be on a new line after the try block",
			separateFinally: "Finally clause should be on a new line after the previous block"
		},
		schema: []
	},
	create(context) {
		const { sourceCode } = context;
		return { TryStatement(node) {
			const tryBlock = node.block;
			const { handler } = node;
			const { finalizer } = node;
			if (handler) {
				const tryCloseBrace = sourceCode.getLastToken(tryBlock);
				const catchToken = sourceCode.getFirstToken(handler);
				if (tryCloseBrace && catchToken && tryBlock.loc && handler.body.loc) {
					const isTryMultiLine = tryBlock.loc.start.line !== tryBlock.loc.end.line;
					const isCatchMultiLine = handler.body.loc.start.line !== handler.body.loc.end.line;
					if (!isTryMultiLine || !isCatchMultiLine) {
						if (tryCloseBrace.loc.end.line === catchToken.loc.start.line) context.report({
							node: handler,
							messageId: "separateCatch",
							fix(fixer) {
								return fixer.replaceTextRange([tryCloseBrace.range[1], catchToken.range[0]], "\n");
							}
						});
					}
				}
			}
			if (!finalizer) return;
			const previousBlock = handler ? handler.body : tryBlock;
			const prevCloseBrace = sourceCode.getLastToken(previousBlock);
			const finallyToken = sourceCode.getFirstTokenBetween(handler ?? tryBlock, finalizer, (token) => token.value === "finally");
			if (prevCloseBrace && finallyToken && previousBlock.loc && finalizer.loc) {
				if (prevCloseBrace.loc.end.line === finallyToken.loc.start.line) {
					const isPrevMultiLine = previousBlock.loc.start.line !== previousBlock.loc.end.line;
					const isFinallyMultiLine = finalizer.loc.start.line !== finalizer.loc.end.line;
					if (!isPrevMultiLine || !isFinallyMultiLine) context.report({
						node: finalizer,
						loc: finallyToken.loc,
						messageId: "separateFinally",
						fix(fixer) {
							return fixer.replaceTextRange([prevCloseBrace.range[1], finallyToken.range[0]], "\n");
						}
					});
				}
			}
		} };
	}
};

//#endregion
export { rule as default };
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