perf: use simd json for json parse

[stormslowly]

Adapt simd_json for faster(20~30% improvement) JSON parse and use simd_json value for internal JSON representation.

[codspeed-hq]

CodSpeed Performance Report

Merging #117 will improve performances by 32.29%

_{Comparing perf/simd_borrowed (99cb865) with main (0c268e1)}

Summary

⚡ 2 improvements
✅ 3 untouched

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	resolver[multi-thread]	129.1 ms	97.6 ms	+32.29%
⚡	resolver[single-thread]	112.1 ms	91.1 ms	+23.06%

[Copilot]

Pull Request Overview

This PR migrates the JSON parsing implementation from serde_json to simd-json for improved performance when parsing package.json files. The changes introduce strongly-typed enums for the type and sideEffects fields and update the file system API to work with Vec<u8> instead of String.

• Replaces serde_json with simd-json for JSON parsing with borrowed values
• Introduces ModuleType and SideEffects enums for type-safe field representation
• Updates file system reads to use bytes instead of strings

Reviewed Changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Cargo.toml	Adds simd-json and self_cell dependencies
Cargo.lock	Updates dependency tree with new and updated packages
deny.toml	Adds Zlib license to allowed list
src/package_json/mod.rs	Adds ModuleType and SideEffects enum definitions
src/package_json/simd.rs	Migrates from serde_json to simd-json with borrowed values
src/lib.rs	Updates JSON type references and pattern matching
src/cache.rs	Changes file read from string to bytes
napi/src/lib.rs	Simplifies module type extraction using new enum
tests/integration_test.rs	Updates tests to use new typed fields
tests/package.json	Fixes invalid JSON value for sideEffects field
src/tests/imports_field.rs	Updates test helpers to use simd-json
src/tests/exports_field.rs	Updates test helpers to use simd-json

Comments suppressed due to low confidence (2)

src/package_json/simd.rs:105

• The method chain is incorrect. get returns Option<&JSONValue>, so .as_str() is being called on the Option instead of the JSONValue. This should be .and_then(|v| v.as_str()) to first extract the value from the Option.
  src/package_json/simd.rs:316
• Column positions should be counted by character positions, not byte positions. For multi-byte UTF-8 characters, this will produce incorrect column numbers. Change to col += 1 to count characters instead of bytes.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[quininer]

LGTM