2 * @fileoverview enforce default parameters to be last
13 description: "enforce default parameters to be last",
14 category: "Best Practices",
16 url: "https://eslint.org/docs/rules/default-param-last"
22 shouldBeLast: "Default parameters should be last."
28 // eslint-disable-next-line jsdoc/require-description
30 * @param {ASTNode} node function node
33 function handleFunction(node) {
34 let hasSeenPlainParam = false;
36 for (let i = node.params.length - 1; i >= 0; i -= 1) {
37 const param = node.params[i];
40 param.type !== "AssignmentPattern" &&
41 param.type !== "RestElement"
43 hasSeenPlainParam = true;
47 if (hasSeenPlainParam && param.type === "AssignmentPattern") {
50 messageId: "shouldBeLast"
57 FunctionDeclaration: handleFunction,
58 FunctionExpression: handleFunction,
59 ArrowFunctionExpression: handleFunction