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'use strict';
const getDocumentationUrl = require('./utils/get-documentation-url');
const messageId = 'throw-new-error';
const customError = /^(?:[A-Z][\da-z]*)*Error$/;
const selector = [
'ThrowStatement',
'>',
'CallExpression.argument',
`:matches(${
[
// `throw FooError()`
[
'[callee.type="Identifier"]',
`[callee.name=/${customError.source}/]`
],
// `throw lib.FooError()`
[
'[callee.type="MemberExpression"]',
'[callee.computed=false]',
'[callee.property.type="Identifier"]',
`[callee.property.name=/${customError.source}/]`
]
].map(selector => selector.join('')).join(', ')
})`
].join('');
const create = context => ({
[selector]: node => {
context.report({
node,
messageId,
fix: fixer => fixer.insertTextBefore(node, 'new ')
});
}
});
module.exports = {
create,
meta: {
type: 'suggestion',
docs: {
url: getDocumentationUrl(__filename)
},
messages: {
[messageId]: 'Use `new` when throwing an error.'
},
fixable: 'code'
}
};