An error occurred while loading the file. Please try again.
-
Rosanny Sihombing authored
This reverts merge request !169
5b5df7d0
/**
* @fileoverview Rule to enforce a maximum number of nested callbacks.
* @author Ian Christian Myers
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
type: "suggestion",
docs: {
description: "enforce a maximum depth that callbacks can be nested",
category: "Stylistic Issues",
recommended: false,
url: "https://eslint.org/docs/rules/max-nested-callbacks"
},
schema: [
{
oneOf: [
{
type: "integer",
minimum: 0
},
{
type: "object",
properties: {
maximum: {
type: "integer",
minimum: 0
},
max: {
type: "integer",
minimum: 0
}
},
additionalProperties: false
}
]
}
],
messages: {
exceed: "Too many nested callbacks ({{num}}). Maximum allowed is {{max}}."
}
},
create(context) {
//--------------------------------------------------------------------------
// Constants
//--------------------------------------------------------------------------
const option = context.options[0];
let THRESHOLD = 10;
if (
typeof option === "object" &&
(Object.prototype.hasOwnProperty.call(option, "maximum") || Object.prototype.hasOwnProperty.call(option, "max"))
) {
THRESHOLD = option.maximum || option.max;
} else if (typeof option === "number") {
THRESHOLD = option;
}
//--------------------------------------------------------------------------
// Helpers
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
//--------------------------------------------------------------------------
const callbackStack = [];
/**
* Checks a given function node for too many callbacks.
* @param {ASTNode} node The node to check.
* @returns {void}
* @private
*/
function checkFunction(node) {
const parent = node.parent;
if (parent.type === "CallExpression") {
callbackStack.push(node);
}
if (callbackStack.length > THRESHOLD) {
const opts = { num: callbackStack.length, max: THRESHOLD };
context.report({ node, messageId: "exceed", data: opts });
}
}
/**
* Pops the call stack.
* @returns {void}
* @private
*/
function popStack() {
callbackStack.pop();
}
//--------------------------------------------------------------------------
// Public API
//--------------------------------------------------------------------------
return {
ArrowFunctionExpression: checkFunction,
"ArrowFunctionExpression:exit": popStack,
FunctionExpression: checkFunction,
"FunctionExpression:exit": popStack
};
}
};