Refactor Lexer class and update documentation

[kamiazya]

This pull request refactors the Lexer class to improve its internal operation and updates the documentation accordingly.

Summary by CodeRabbit

• Refactor
  • Improved the performance of the Lexer in the "web-csv-toolbox".
  • Enhanced Lexer functionality for better tokenization and extraction of CSV data.

[changeset-bot]

🦋 Changeset detected

Latest commit: b68699f

The changes in this PR will be included in the next version bump.

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[coderabbitai]

Walkthrough

The recent updates to the web-csv-toolbox focus on enhancing the Lexer's performance and functionality. Key improvements include a refactored Lexer that now supports buffering, advanced tokenization, and the ability to handle various CSV data intricacies more efficiently.

Changes

File Path	Change Summary
src/Lexer.ts	Added buffering, new methods for tokenization, and enhanced CSV data extraction capabilities.
.changeset/...-clean.md, .changeset/...-turn.md	Patches and improvements for Lexer performance and internal operations in web-csv-toolbox.

Possibly related issues

• Issue Fix Lexer Parsing Issue with Non-Standard Delimiters and Quotations #63: This issue addresses the need for improved parsing of non-standard CSV formats, which seems to be targeted by the new Lexer functionalities introduced in src/Lexer.ts. The enhancements in tokenization and handling of quoted strings could potentially resolve the parsing issues mentioned.

🐇✨ A whimsical ode to code, by a rabbit bold and bright,
In the toolbox of the web, where CSVs alight,
Lexer leaps and bounds ahead, with tokens clean and tight,
Parsing through the commas, from morning until night,
Cheers to devs, with every commit, the future's looking bright! 🌟🎉

---

Recent Review Details

Configuration used: CodeRabbit UI

Commits

Files that changed from the base of the PR and between e651c9c and b68699f.

Files selected for processing (3)

• .changeset/strange-shirts-clean.md (1 hunks)
• .changeset/thirty-donkeys-turn.md (1 hunks)
• src/Lexer.ts (5 hunks)

Files not reviewed due to errors (1)

• src/Lexer.ts (no review received)

Additional Context Used

Learnings (1)

src/Lexer.ts (1)

User: kamiazya
PR: kamiazya/web-csv-toolbox#29
File: src/transformers/LexerTransformer.ts:146-150
Timestamp: 2024-01-04T16:00:17.243Z
Learning: The documentation within the `LexerTransformer` class was corrected to accurately describe the behavior of the `#nextToken` method when not flushing and the buffer does not end with a quotation mark, as per commit `d5c7acd6cd074296ab8dd39c62acb3efd84d4707`.

Additional comments not posted (2)

.changeset/thirty-donkeys-turn.md (1)

5-5: The changeset description clearly outlines the improvements made to the Lexer's internal operation.

.changeset/strange-shirts-clean.md (1)

5-5: The changeset description clearly outlines the performance improvements made to the Lexer.

---

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.18%. Comparing base (e651c9c) to head (b68699f).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #175      +/-   ##
==========================================
- Coverage   99.19%   99.18%   -0.01%     
==========================================
  Files          36       36              
  Lines         372      370       -2     
  Branches      111      111              
==========================================
- Hits          369      367       -2     
  Misses          3        3              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[codspeed-hq]

CodSpeed Performance Report

Merging #175 will not alter performance

_{Comparing persormance-improve (b68699f) with main (e651c9c)}

Summary

✅ 7 untouched benchmarks

[kamiazya]

@coderabbitai review