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index.js
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index.js
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// @ts-nocheck
'use strict';
const beforeBlockString = require('../../utils/beforeBlockString');
const blockString = require('../../utils/blockString');
const hasBlock = require('../../utils/hasBlock');
const hasEmptyBlock = require('../../utils/hasEmptyBlock');
const report = require('../../utils/report');
const ruleMessages = require('../../utils/ruleMessages');
const validateOptions = require('../../utils/validateOptions');
const whitespaceChecker = require('../../utils/whitespaceChecker');
const ruleName = 'block-opening-brace-space-after';
const messages = ruleMessages(ruleName, {
expectedAfter: () => 'Expected single space after "{"',
rejectedAfter: () => 'Unexpected whitespace after "{"',
expectedAfterSingleLine: () => 'Expected single space after "{" of a single-line block',
rejectedAfterSingleLine: () => 'Unexpected whitespace after "{" of a single-line block',
expectedAfterMultiLine: () => 'Expected single space after "{" of a multi-line block',
rejectedAfterMultiLine: () => 'Unexpected whitespace after "{" of a multi-line block',
});
function rule(expectation, options, context) {
const checker = whitespaceChecker('space', expectation, messages);
return (root, result) => {
const validOptions = validateOptions(result, ruleName, {
actual: expectation,
possible: [
'always',
'never',
'always-single-line',
'never-single-line',
'always-multi-line',
'never-multi-line',
],
});
if (!validOptions) {
return;
}
// Check both kinds of statements: rules and at-rules
root.walkRules(check);
root.walkAtRules(check);
function check(statement) {
// Return early if blockless or has an empty block
if (!hasBlock(statement) || hasEmptyBlock(statement)) {
return;
}
checker.after({
source: blockString(statement),
index: 0,
err: (m) => {
if (context.fix) {
if (expectation.startsWith('always')) {
statement.first.raws.before = ' ';
return;
}
if (expectation.startsWith('never')) {
statement.first.raws.before = '';
return;
}
}
report({
message: m,
node: statement,
index: beforeBlockString(statement, { noRawBefore: true }).length + 1,
result,
ruleName,
});
},
});
}
};
}
rule.ruleName = ruleName;
rule.messages = messages;
module.exports = rule;