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Commit6bfa2e3

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INIT - setup
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7 files changed

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7 files changed

+160
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‎.gitignore

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# NPM
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node_modules
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package-lock.json

‎.vscode/extensions.json

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{
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// See http://go.microsoft.com/fwlink/?LinkId=827846
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// for the documentation about the extensions.json format
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"recommendations": ["dbaeumer.vscode-eslint"]
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}

‎.vscode/launch.json

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{
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"version":"0.2.0",
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"configurations": [
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{
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"type":"node",
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"request":"launch",
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"name":"Run Tests",
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"program":"${workspaceFolder}/node_modules/mocha/bin/_mocha",
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"args": ["--reporter=spec","--colors","--bail","--timeout","9999999"],
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"console":"internalConsole",
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"internalConsoleOptions":"openOnSessionStart"
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}
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]
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}

‎.vscode/settings.json

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{
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"editor.formatOnSave":true,
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"editor.codeActionsOnSave": {
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"source.fixAll":true
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}
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}

‎README.md

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#Backend Challenges: package.json

‎coderoad/package.json

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{
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"name":"coderoad-fcc-learn-npm",
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"repository": {
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"type":"git",
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"url":"https://github.com/coderoad/fcc-learn-npm"
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},
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"scripts": {
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"test":"mocha",
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"programmatic-test":"mocha --reporter=mocha-tap-reporter"
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},
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"dependencies": {
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"mocha":"^7.0.1",
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"mocha-tap-reporter":"^0.1.3"
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}
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}

‎coderoad/test/utils.js

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constfs=require("fs");
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constpath=require("path");
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constutil=require("util");
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const{ join}=require("path");
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constreadFile=util.promisify(fs.readFile);
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constreaddir=util.promisify(fs.readdir);
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constgetPackageJson=async(dir=path.join(process.cwd(),".."))=>{
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// load package.json file
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constpathToPackageJson=join(dir,"package.json");
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constpackageJson=awaitreadFile(pathToPackageJson,"utf8").catch(
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console.error
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);
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if(!packageJson){
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thrownewError("Missing root package.json");
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}
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// parse as JSON
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constjson=JSON.parse(packageJson);
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if(!json){
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thrownewError("The package.json content looks invalid");
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}
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returnjson;
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};
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exports.getPackageJson=getPackageJson;
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constversionMatch=(current,expected)=>{
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letcurrentSemver=current;
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if(["~","^"].includes(current[0])){
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currentSemver=current.substring(1);
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}
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returncurrentSemver===expected;
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};
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/**
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* isModuleInstalled
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*@param { name, type} params
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* "name" - the name of the dependency
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* "type" - "dependency", "devDependency", "peerDependency"
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*@returns boolean
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*/
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constisModuleInstalled=async({ name, type, version})=>{
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// 1. load package.json file
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constjson=awaitgetPackageJson();
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// 2. verify package lists dependency by type
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letinstallCommand;
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lethasDependency;
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letcurrentVersion;
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switch(type){
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case"dependency":
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installCommand="--save";
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hasDependency=!!json.dependencies&&json.dependencies[name];
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currentVersion=json.dependencies[name];
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break;
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case"devDependency":
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installCommand="--save-dev";
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hasDependency=!!json.devDependencies&&json.devDependencies[name];
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currentVersion=json.devDependencies[name];
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break;
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case"peerDependency":
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thrownewError("Peer dependencies unsupported");
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default:
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thrownewError("Unsupported packaged type");
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}
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if(!hasDependency){
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thrownewError(`Run "npm install${installCommand}${name}"`);
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}
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// 3. if version, check dependency version
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if(version&&!versionMatch(currentVersion,version)){
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thrownewError(
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`Dependency${name} version${currentVersion} does not match expected${version}`
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);
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}
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// 4. verify node_module installed
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constpathToNodeModule=join(process.cwd(),"..","node_modules",name);
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consthasNodeModules=awaitreaddir(pathToNodeModule).catch(()=>{
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thrownewError('Missing node_modules. Run "npm install"');
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});
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if(!hasNodeModules){
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thrownewError('Missing node_modules. Run "npm install"');
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}
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// 5. if version, has installed node_module version
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if(version){
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constnodeModulePackageJson=awaitgetPackageJson(pathToNodeModule);
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if(!versionMatch(nodeModulePackageJson.version,version)){
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thrownewError(
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`Dependency${name} version${version} is not yet installed. Run "npm install"`
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);
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}
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}
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returntrue;
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};
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exports.isModuleInstalled=isModuleInstalled;
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// created because assert.doesNotThrow not working predictably with async fns
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constdoesNotThrow=async(fn)=>{
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letresult=true;
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try{
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awaitfn();
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}catch(error){
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console.error(error);
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result=false;
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}
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returnresult;
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};
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exports.doesNotThrow=doesNotThrow;

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