]>
git.proxmox.com Git - pve-eslint.git/blob - eslint/lib/rules/no-confusing-arrow.js
2 * @fileoverview A rule to warn against using arrow functions when they could be
3 * confused with comparisons
4 * @author Jxck <https://github.com/Jxck>
9 const astUtils
= require("./utils/ast-utils.js");
11 //------------------------------------------------------------------------------
13 //------------------------------------------------------------------------------
16 * Checks whether or not a node is a conditional expression.
17 * @param {ASTNode} node node to test
18 * @returns {boolean} `true` if the node is a conditional expression.
20 function isConditional(node
) {
21 return node
&& node
.type
=== "ConditionalExpression";
24 //------------------------------------------------------------------------------
26 //------------------------------------------------------------------------------
28 /** @type {import('../shared/types').Rule} */
34 description
: "Disallow arrow functions where they could be confused with comparisons",
36 url
: "https://eslint.org/docs/rules/no-confusing-arrow"
44 allowParens
: { type
: "boolean", default: true },
45 onlyOneSimpleParam
: { type
: "boolean", default: false }
47 additionalProperties
: false
51 confusing
: "Arrow function used ambiguously with a conditional expression."
56 const config
= context
.options
[0] || {};
57 const allowParens
= config
.allowParens
|| (config
.allowParens
=== void 0);
58 const onlyOneSimpleParam
= config
.onlyOneSimpleParam
;
59 const sourceCode
= context
.getSourceCode();
63 * Reports if an arrow function contains an ambiguous conditional.
64 * @param {ASTNode} node A node to check and report.
67 function checkArrowFunc(node
) {
68 const body
= node
.body
;
70 if (isConditional(body
) &&
71 !(allowParens
&& astUtils
.isParenthesised(sourceCode
, body
)) &&
72 !(onlyOneSimpleParam
&& !(node
.params
.length
=== 1 && node
.params
[0].type
=== "Identifier"))) {
75 messageId
: "confusing",
78 // if `allowParens` is not set to true don't bother wrapping in parens
79 return allowParens
&& fixer
.replaceText(node
.body
, `(${sourceCode.getText(node.body)})`);
86 ArrowFunctionExpression
: checkArrowFunc