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bongoDev | npm Dependencies vs Dev Dependencies - JavaScript Hands-On Learning Pro — Zero to Intermediate in 30 Days

TopicJavaScript Hands-On Learning Pro — Zero to Intermediate in 30 Days

01Your 30-Day JavaScript Learning System: Read, Predict, Run, Break & FixPreview
02JavaScript vs ECMAScript vs Browser vs Node.js
03Install Node.js, Verify the Runtime & Use the REPL
04Editor, DevTools, Terminal & Project Layout
05Statements, Expressions, Comments & Your First Script
06Variables: `const`, `let`, `var` & Mutation
07Primitive Values, `typeof`, `null` & `undefined`
08Numbers, `Math`, `NaN`, Infinity & BigInt
09Strings, Template Literals & Unicode-Aware Thinking
10Conversion, Coercion, `===` vs `==` & Truthful Types
11Operators, Precedence & Short-Circuit Evaluation
12Truthy/Falsy Values, `if` / `else if` / `else`
13`switch` & Explicit State Handling
14Arrays: Ordered Collections & Safe Updates
15Objects: Model Real Engineering Data
16Nested Data, Optional Fields & Defensive Access
17Loops: `for`, `while`, `break` & `continue`
18`for...of`, `for...in`, `Object.entries()` & `enumerate` Thinking
19Array Methods: `map`, `filter`, `find`, `some` & `every`
20Week 1 Project: System Health Evaluator
21Functions: Declarations, Expressions & First-Class Values
22Arrow Functions & Lexical `this`
23Parameters, Defaults, Rest & Spread
24Return Values, Scope & Closures
25Destructuring, Property Shorthand & Computed Properties
26Optional Chaining & Nullish Coalescing
27`Map` & `Set`: Keyed Collections and Uniqueness
28`reduce`, Sorting, `flatMap` & Mutation Awareness
29Week 2 Project: Server Inventory Manager
30Browser DOM: Select, Read & Update the Page
31Browser Events, Forms & User Input
32Safe Browser Rendering: Text vs HTML
33Browser `fetch`: HTTP, JSON & Failure Checks
34Browser Storage: `localStorage`, `sessionStorage` & Data Boundaries
35Browser Project: Production Service Dashboard
36ES Modules: `import`, `export` & Module Boundaries
37ES Modules vs CommonJS in Node.js
38`package.json`, `npm init` & Project Metadata
39npm Dependencies vs Dev Dependencies
40Semantic Versioning, `package-lock.json` & `npm ci`
41npm Scripts, `npx`/`npm exec` & Repeatable Tooling
42Node Core Modules: `fs`, `path`, `process` & `URL`
43Files & JSON with `fs/promises`
44Process Arguments, Standard Streams & Exit Codes
45`try` / `catch` / `finally` & Error Boundaries
46Custom Errors, `cause` & Failure Contracts
47Stack Traces & a Scientific Debugging Workflow
48Browser DevTools Debugging: Sources, Network & Storage
49Node.js Debugging: `debugger`, Inspector & VS Code
50Structured Logging for JavaScript Applications
51Callbacks & Inversion of Control
52Promises: Pending, Fulfilled, Rejected & Chaining
53`async` / `await`: Readable Asynchronous Control Flow
54Async Error Boundaries & Unhandled Rejections
55Promise Combinators: `all`, `allSettled`, `race` & `any`
56Event Loop, Tasks, Microtasks & Execution Order
57Sequential vs Concurrent Async Work
58Async Iteration & `for await...of`
59Node.js `fetch`: Build a Real API Client
60Timeouts with `AbortController` & `AbortSignal`
61Retries, Exponential Backoff & Jitter
62Week 3 Project: Log Analyzer & API Health Checker
63Designing Command-Line Interfaces without Framework Magic
64Prototypes & the JavaScript Object Model
65Classes, Private Fields & Encapsulation
66`this`, `bind`, `call` & `apply`
67Composition over Inheritance for Application Design
68Higher-Order Functions, Closures & Functional Building Blocks
69Pure Functions, Side Effects & Immutable Updates
70Iterables, Iterators & Generators
71Regular Expressions for Logs, Validation & Extraction
72Date, Time Zones, `Intl` & Temporal Awareness
73Symbols, `globalThis` & Protocol Hooks
74Modern ECMAScript: ES2015+ Feature Map & Compatibility Thinking
75Dynamic `import()`, Top-Level `await` & Import Attributes
76Environment Configuration, Secrets & Secure Defaults
77Modern Runtime Features & Feature Detection
78JavaScript Security Fundamentals for Engineers
79Testing with Node’s Built-In `node:test`
80Async Testing, Dependency Injection & Mocks/Fakes
81ESLint, Prettier, JSDoc & Automated Quality Checks
82Robust JavaScript Engineering: Validate, Bound, Retry, Clean Up
83Week 4 Capstone: DevOps Automation Toolkit
84Capstone Productionization: Validation, Tests, CI & Failure Drills
85JavaScript Debugging & Troubleshooting Playbook
86JavaScript Tooling Cheatsheet & 30-Day Graduation Checklist

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Knowledge Hub/JavaScript Hands-On Learning Pro — Zero to Intermediate in 30 Days/npm Dependencies vs Dev Dependencies

JavaScript Hands-On Learning Pro — Zero to Intermediate in 30 Days

Paid lesson · Intermediate · 32 min read

npm Dependencies vs Dev Dependencies

Install packages into the correct dependency class and audit why the project needs each one.

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This lesson is part of the paid course.

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Previous`package.json`, `npm init` & Project MetadataLocked NextSemantic Versioning, `package-lock.json` & `npm ci`Locked

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