123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899 |
- "use strict";
- module.exports = {
- meta: {
- deprecated: true,
- replacedBy: [],
- type: "suggestion",
- docs: {
- description: "require error handling in callbacks",
- category: "Node.js and CommonJS",
- recommended: false,
- url: "https://eslint.org/docs/rules/handle-callback-err"
- },
- schema: [
- {
- type: "string"
- }
- ],
- messages: {
- expected: "Expected error to be handled."
- }
- },
- create(context) {
- const errorArgument = context.options[0] || "err";
-
- function isPattern(stringToCheck) {
- const firstChar = stringToCheck[0];
- return firstChar === "^";
- }
-
- function matchesConfiguredErrorName(name) {
- if (isPattern(errorArgument)) {
- const regexp = new RegExp(errorArgument, "u");
- return regexp.test(name);
- }
- return name === errorArgument;
- }
-
- function getParameters(scope) {
- return scope.variables.filter(variable => variable.defs[0] && variable.defs[0].type === "Parameter");
- }
-
- function checkForError(node) {
- const scope = context.getScope(),
- parameters = getParameters(scope),
- firstParameter = parameters[0];
- if (firstParameter && matchesConfiguredErrorName(firstParameter.name)) {
- if (firstParameter.references.length === 0) {
- context.report({ node, messageId: "expected" });
- }
- }
- }
- return {
- FunctionDeclaration: checkForError,
- FunctionExpression: checkForError,
- ArrowFunctionExpression: checkForError
- };
- }
- };
|