d2-ui
Version:
75 lines (62 loc) • 2.26 kB
JavaScript
/**
* @fileoverview Validate spacing before closing bracket in JSX.
* @author ryym
*/
;
// ------------------------------------------------------------------------------
// Rule Definition
// ------------------------------------------------------------------------------
module.exports = function(context) {
var configuration = context.options[0] || 'always';
var sourceCode = context.getSourceCode();
var NEVER_MESSAGE = 'A space is forbidden before closing bracket';
var ALWAYS_MESSAGE = 'A space is required before closing bracket';
/**
* Find the token before the closing bracket.
* @param {ASTNode} node - The JSX element node.
* @returns {Token} The token before the closing bracket.
*/
function getTokenBeforeClosingBracket(node) {
var attributes = node.attributes;
if (attributes.length === 0) {
return node.name;
}
return attributes[ attributes.length - 1 ];
}
// --------------------------------------------------------------------------
// Public
// --------------------------------------------------------------------------
return {
JSXOpeningElement: function(node) {
if (!node.selfClosing) {
return;
}
var leftToken = getTokenBeforeClosingBracket(node);
var closingSlash = sourceCode.getTokenAfter(leftToken);
if (leftToken.loc.end.line !== closingSlash.loc.start.line) {
return;
}
if (configuration === 'always' && !sourceCode.isSpaceBetweenTokens(leftToken, closingSlash)) {
context.report({
loc: closingSlash.loc.start,
message: ALWAYS_MESSAGE,
fix: function(fixer) {
return fixer.insertTextBefore(closingSlash, ' ');
}
});
} else if (configuration === 'never' && sourceCode.isSpaceBetweenTokens(leftToken, closingSlash)) {
context.report({
loc: closingSlash.loc.start,
message: NEVER_MESSAGE,
fix: function(fixer) {
var previousToken = sourceCode.getTokenBefore(closingSlash);
return fixer.removeRange([previousToken.range[1], closingSlash.range[0]]);
}
});
}
}
};
};
module.exports.schema = [{
enum: ['always', 'never']
}];