wrap-multilines.js
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/**
* @fileoverview Prevent missing parentheses around multilines JSX
* @author Yannick Croissant
*/
'use strict';
// ------------------------------------------------------------------------------
// Constants
// ------------------------------------------------------------------------------
var DEFAULTS = {
declaration: true,
assignment: true,
return: true
};
// ------------------------------------------------------------------------------
// Rule Definition
// ------------------------------------------------------------------------------
module.exports = function(context) {
var sourceCode = context.getSourceCode();
function isParenthesised(node) {
var previousToken = context.getTokenBefore(node);
var nextToken = context.getTokenAfter(node);
return previousToken && nextToken &&
previousToken.value === '(' && previousToken.range[1] <= node.range[0] &&
nextToken.value === ')' && nextToken.range[0] >= node.range[1];
}
function isMultilines(node) {
return node.loc.start.line !== node.loc.end.line;
}
function check(node) {
if (!node || node.type !== 'JSXElement') {
return;
}
if (!isParenthesised(node) && isMultilines(node)) {
context.report({
node: node,
message: 'Missing parentheses around multilines JSX',
fix: function(fixer) {
return fixer.replaceText(node, '(' + sourceCode.getText(node) + ')');
}
});
}
}
function isEnabled(type) {
var userOptions = context.options[0] || {};
if (({}).hasOwnProperty.call(userOptions, type)) {
return userOptions[type];
}
return DEFAULTS[type];
}
// --------------------------------------------------------------------------
// Public
// --------------------------------------------------------------------------
return {
VariableDeclarator: function(node) {
if (isEnabled('declaration')) {
check(node.init);
}
},
AssignmentExpression: function(node) {
if (isEnabled('assignment')) {
check(node.right);
}
},
ReturnStatement: function(node) {
if (isEnabled('return')) {
check(node.argument);
}
}
};
};
module.exports.schema = [{
type: 'object',
properties: {
declaration: {
type: 'boolean'
},
assignment: {
type: 'boolean'
},
return: {
type: 'boolean'
}
},
additionalProperties: false
}];