118 lines
3.3 KiB
JavaScript
118 lines
3.3 KiB
JavaScript
// @ts-nocheck
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'use strict';
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const blockString = require('../../utils/blockString');
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const hasBlock = require('../../utils/hasBlock');
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const hasEmptyBlock = require('../../utils/hasEmptyBlock');
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const isSingleLineString = require('../../utils/isSingleLineString');
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const report = require('../../utils/report');
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const ruleMessages = require('../../utils/ruleMessages');
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const validateOptions = require('../../utils/validateOptions');
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const ruleName = 'block-closing-brace-newline-before';
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const messages = ruleMessages(ruleName, {
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expectedBefore: 'Expected newline before "}"',
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expectedBeforeMultiLine: 'Expected newline before "}" of a multi-line block',
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rejectedBeforeMultiLine: 'Unexpected whitespace before "}" of a multi-line block',
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});
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function rule(expectation, options, context) {
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return (root, result) => {
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const validOptions = validateOptions(result, ruleName, {
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actual: expectation,
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possible: ['always', 'always-multi-line', 'never-multi-line'],
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});
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if (!validOptions) {
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return;
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}
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// Check both kinds of statements: rules and at-rules
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root.walkRules(check);
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root.walkAtRules(check);
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function check(statement) {
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// Return early if blockless or has empty block
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if (!hasBlock(statement) || hasEmptyBlock(statement)) {
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return;
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}
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// Ignore extra semicolon
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const after = (statement.raws.after || '').replace(/;+/, '');
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if (after === undefined) {
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return;
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}
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const blockIsMultiLine = !isSingleLineString(blockString(statement));
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const statementString = statement.toString();
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let index = statementString.length - 2;
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if (statementString[index - 1] === '\r') {
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index -= 1;
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}
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// We're really just checking whether a
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// newline *starts* the block's final space -- between
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// the last declaration and the closing brace. We can
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// ignore any other whitespace between them, because that
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// will be checked by the indentation rule.
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if (!after.startsWith('\n') && !after.startsWith('\r\n')) {
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if (expectation === 'always') {
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complain(messages.expectedBefore);
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} else if (blockIsMultiLine && expectation === 'always-multi-line') {
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complain(messages.expectedBeforeMultiLine);
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}
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}
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if (after !== '' && blockIsMultiLine && expectation === 'never-multi-line') {
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complain(messages.rejectedBeforeMultiLine);
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}
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function complain(message) {
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if (context.fix) {
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if (expectation.startsWith('always')) {
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const firstWhitespaceIndex = statement.raws.after.search(/\s/);
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const newlineBefore =
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firstWhitespaceIndex >= 0
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? statement.raws.after.slice(0, firstWhitespaceIndex)
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: statement.raws.after;
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const newlineAfter =
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firstWhitespaceIndex >= 0 ? statement.raws.after.slice(firstWhitespaceIndex) : '';
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const newlineIndex = newlineAfter.search(/\r?\n/);
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if (newlineIndex >= 0) {
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statement.raws.after = newlineBefore + newlineAfter.slice(newlineIndex);
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} else {
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statement.raws.after = newlineBefore + context.newline + newlineAfter;
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}
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return;
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}
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if (expectation === 'never-multi-line') {
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statement.raws.after = statement.raws.after.replace(/\s/g, '');
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return;
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}
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}
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report({
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message,
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result,
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ruleName,
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node: statement,
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index,
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});
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}
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}
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};
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}
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rule.ruleName = ruleName;
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rule.messages = messages;
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module.exports = rule;
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