74 lines
2.2 KiB
JavaScript
74 lines
2.2 KiB
JavaScript
/**
|
|
* @author Toru Nagashima <https://github.com/mysticatea>
|
|
* See LICENSE file in root directory for full license.
|
|
*/
|
|
"use strict"
|
|
|
|
const { findVariable } = require("eslint-utils")
|
|
|
|
function isExports(node, scope) {
|
|
let variable = null
|
|
|
|
return (
|
|
node != null &&
|
|
node.type === "Identifier" &&
|
|
node.name === "exports" &&
|
|
(variable = findVariable(scope, node)) != null &&
|
|
variable.scope.type === "global"
|
|
)
|
|
}
|
|
|
|
function isModuleExports(node, scope) {
|
|
let variable = null
|
|
|
|
return (
|
|
node != null &&
|
|
node.type === "MemberExpression" &&
|
|
!node.computed &&
|
|
node.object.type === "Identifier" &&
|
|
node.object.name === "module" &&
|
|
node.property.type === "Identifier" &&
|
|
node.property.name === "exports" &&
|
|
(variable = findVariable(scope, node.object)) != null &&
|
|
variable.scope.type === "global"
|
|
)
|
|
}
|
|
|
|
module.exports = {
|
|
meta: {
|
|
docs: {
|
|
description: "disallow the assignment to `exports`",
|
|
category: "Possible Errors",
|
|
recommended: true,
|
|
url: "https://github.com/weiran-zsd/eslint-plugin-node/blob/HEAD/docs/rules/no-exports-assign.md",
|
|
},
|
|
fixable: null,
|
|
messages: {
|
|
forbidden:
|
|
"Unexpected assignment to 'exports' variable. Use 'module.exports' instead.",
|
|
},
|
|
schema: [],
|
|
type: "problem",
|
|
},
|
|
create(context) {
|
|
return {
|
|
AssignmentExpression(node) {
|
|
const scope = context.getScope()
|
|
if (
|
|
!isExports(node.left, scope) ||
|
|
// module.exports = exports = {}
|
|
(node.parent.type === "AssignmentExpression" &&
|
|
node.parent.right === node &&
|
|
isModuleExports(node.parent.left, scope)) ||
|
|
// exports = module.exports = {}
|
|
(node.right.type === "AssignmentExpression" &&
|
|
isModuleExports(node.right.left, scope))
|
|
) {
|
|
return
|
|
}
|
|
|
|
context.report({ node, messageId: "forbidden" })
|
|
},
|
|
}
|
|
},
|
|
}
|