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https://github.com/10h30/odin-javascript-exercises.git
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remove timer and simon
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+156
@@ -0,0 +1,156 @@
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/**
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* @fileoverview Rule to flag wrapping non-iife in parens
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* @author Gyandeep Singh
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Helpers
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//------------------------------------------------------------------------------
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/**
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* Checks whether or not a given node is an `Identifier` node which was named a given name.
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* @param {ASTNode} node - A node to check.
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* @param {string} name - An expected name of the node.
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* @returns {boolean} `true` if the node is an `Identifier` node which was named as expected.
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*/
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function isIdentifier(node, name) {
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return node.type === "Identifier" && node.name === name;
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}
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/**
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* Checks whether or not a given node is an argument of a specified method call.
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* @param {ASTNode} node - A node to check.
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* @param {number} index - An expected index of the node in arguments.
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* @param {string} object - An expected name of the object of the method.
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* @param {string} property - An expected name of the method.
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* @returns {boolean} `true` if the node is an argument of the specified method call.
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*/
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function isArgumentOfMethodCall(node, index, object, property) {
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const parent = node.parent;
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return (
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parent.type === "CallExpression" &&
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parent.callee.type === "MemberExpression" &&
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parent.callee.computed === false &&
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isIdentifier(parent.callee.object, object) &&
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isIdentifier(parent.callee.property, property) &&
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parent.arguments[index] === node
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);
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}
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/**
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* Checks whether or not a given node is a property descriptor.
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* @param {ASTNode} node - A node to check.
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* @returns {boolean} `true` if the node is a property descriptor.
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*/
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function isPropertyDescriptor(node) {
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// Object.defineProperty(obj, "foo", {set: ...})
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if (isArgumentOfMethodCall(node, 2, "Object", "defineProperty") ||
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isArgumentOfMethodCall(node, 2, "Reflect", "defineProperty")
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) {
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return true;
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}
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/*
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* Object.defineProperties(obj, {foo: {set: ...}})
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* Object.create(proto, {foo: {set: ...}})
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*/
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node = node.parent.parent;
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return node.type === "ObjectExpression" && (
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isArgumentOfMethodCall(node, 1, "Object", "create") ||
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isArgumentOfMethodCall(node, 1, "Object", "defineProperties")
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);
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}
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = {
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meta: {
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docs: {
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description: "enforce getter and setter pairs in objects",
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category: "Best Practices",
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recommended: false
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},
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schema: [{
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type: "object",
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properties: {
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getWithoutSet: {
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type: "boolean"
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},
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setWithoutGet: {
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type: "boolean"
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}
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},
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additionalProperties: false
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}]
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},
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create(context) {
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const config = context.options[0] || {};
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const checkGetWithoutSet = config.getWithoutSet === true;
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const checkSetWithoutGet = config.setWithoutGet !== false;
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/**
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* Checks a object expression to see if it has setter and getter both present or none.
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* @param {ASTNode} node The node to check.
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* @returns {void}
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* @private
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*/
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function checkLonelySetGet(node) {
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let isSetPresent = false;
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let isGetPresent = false;
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const isDescriptor = isPropertyDescriptor(node);
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for (let i = 0, end = node.properties.length; i < end; i++) {
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const property = node.properties[i];
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let propToCheck = "";
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if (property.kind === "init") {
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if (isDescriptor && !property.computed) {
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propToCheck = property.key.name;
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}
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} else {
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propToCheck = property.kind;
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}
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switch (propToCheck) {
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case "set":
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isSetPresent = true;
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break;
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case "get":
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isGetPresent = true;
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break;
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default:
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// Do nothing
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}
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if (isSetPresent && isGetPresent) {
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break;
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}
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}
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if (checkSetWithoutGet && isSetPresent && !isGetPresent) {
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context.report({ node, message: "Getter is not present." });
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} else if (checkGetWithoutSet && isGetPresent && !isSetPresent) {
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context.report({ node, message: "Setter is not present." });
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}
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}
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return {
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ObjectExpression(node) {
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if (checkSetWithoutGet || checkGetWithoutSet) {
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checkLonelySetGet(node);
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}
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}
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};
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}
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};
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