55 Errors Later: My Week Wrestling with MathJax v4.

Weekly Summary – August 17, 2025

What Happened This Week

This week, I descended into the underworld of MathJax, armed with nothing but Next.js, TypeScript, and misplaced optimism. Spoiler: optimism didn’t last long. MathJax v4 threw over 55 unique errors at me — some hilarious, some infuriating, and some so weird I questioned whether my codebase was haunted.

By Sunday, though, the monster was tamed. The tutorial is nearly finished, and I’m still polishing it up before it goes live. In the meantime, here’s the saga.

The Development Saga

Phase 1: Curiosity Killed the Cat (Wednesday Morning)

Started by exploring MathJax v3 integration, only to realize I was playing with the wrong toy.

Phase 2: Rage Quit, Restart (Wednesday Noon)

Deleted the entire project directory. If you’ve never felt the catharsis of rm -rf on a stubborn codebase, I highly recommend it.

Phase 3: Enter MathJax v4 (Wednesday Afternoon)

Switched to v4, hit rendering issues immediately, and found out the only way forward was to use React’s dangerouslySetInnerHTML. Not exactly confidence-inspiring.

Phase 4: Components Assemble (Wednesday Evening)

Built <InlineMath> and <DisplayMath> components. Simple, clean, and slightly functional.

Phase 5: Font Therapy (Wednesday Late Evening

Tried to implement dynamic font switching. Euler fonts rebelled, CDN links broke, recursion errors happened. Eventually gave up and settled for stability over style.

Phase 6: Syntax Showdown (Still Wednesday)

LaTeX and JSX don’t get along. Backslashes went missing like socks in the dryer. Solution: template literals with backticks. Clean, effective, slightly cursed.

Phase 7: Documentation Marathon (Friday Morning)

Rewrote the README from scratch — clearer, cleaner, and with fewer opportunities for future-me to swear. Added a configuration system, only to rip it out later when it caused more trouble than it solved.

Phase 8: Labels and Layout (Sunday Morning)

Finally cracked equation labeling and cross-references. Solved the “labels floating in another time zone” problem by constraining <DisplayMath> to 50% width. Added advanced examples: matrices, vectors, aligned equations, even colored math. Documentation now felt like a textbook with jokes.

Phase 9: Final Polish (Sunday Afternoon)

Expanded the README to 1100+ lines, filled with step-by-step instructions, Maxwell’s equations for flair, and troubleshooting tips that read like a survival guide.

Error Bingo

  • Build Errors (15+): Next.js configs deprecating themselves mid-build.
  • TypeScript Errors (12+): MathJax is not defined became my new ringtone.
  • JSX Errors (10+): LaTeX and JSX had a custody battle over backslashes.
  • Runtime Errors (8+): Fonts vanished, promises ghosted me.
  • Equation Labeling Errors (5+): Equations labeled themselves “???” like they forgot their own names.

Total: 55+ errors, countless retries, and one developer whose will to live briefly resembled an unclosed bracket.

Key Discoveries

  • JSX hates LaTeX: Use template literals or perish.
  • Fonts are chaos: If you try to dynamically switch them, Next.js will punish you.
  • Equation labeling: Works best when you accept MathJax’s rules instead of fighting them.
  • Error handling: Retry mechanisms are your best friend, unless you enjoy infinite loops.

Side Quest: Debugging Philosophy

At some point between the tenth TypeScript error and the fourth recursive font failure, I realized debugging isn’t about solving problems. It’s about developing enough stubbornness to refuse defeat. Debugging is the art of becoming unreasonably confident that the computer is wrong — even though deep down you know it’s right.

Side Quest: The README as Literature

When the README crossed the 1,100 line mark, I started wondering if I had accidentally written a short novel. It has character arcs (the <InlineMath> component learns to behave), conflict (JSX vs. LaTeX), and even foreshadowing (font issues hinted at earlier, before their dramatic return). At this point, publishing the tutorial feels less like releasing documentation and more like dropping the next entry in a serialized drama.

Side Quest: Future Plans Beyond MathJax

Once the MathJax tutorial is polished and published, the next beast is already lurking. Maybe it’ll be routing quirks in Next.js. Maybe React’s suspense API will ambush me. Maybe TypeScript will evolve sentience and start arguing about my code in real time. Whatever it is, the tradition of wrestling new errors into submission — and writing about them with gallows humor — is officially the core loop of this project.

Looking Ahead

Next week’s mission is simple: finish polishing and publish the MathJax v4 tutorial. After that, I’ll find a new web-dev beast to wrestle — probably lurking in the React/Next.js jungle, disguised as an “improvement.”

Numbers at a Glance

  • Posts published this week: 0
  • Drafts completed: 1 (MathJax v4 tutorial, fully documented, polishing in progress)
  • Errors survived: 55+
  • README length: 1100+ lines (longer than some PhD dissertations)

Coming Tutorials

  • Getting MathJax v4 Working in a Next.js/React App — currently in polish mode, publishing soon.

This story was generated with the help of generative AI. You can view the original chat where it was written here

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