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Package.json Dependencies Comparison: v5.0.0 vs v4.0.0

Major Changes in Dependencies

Added Dependencies (v5.0.0):

• @types/eslint-scope: "^3.7.0"
• @types/estree: "^0.0.45"
• @webassemblyjs/ast: "1.9.0"
• @webassemblyjs/helper-module-context: "1.9.0"
• @webassemblyjs/wasm-edit: "1.9.0"
• @webassemblyjs/wasm-parser: "1.9.0"
• browserslist: "^4.14.3"
• enhanced-resolve: "^5.2.0" (was "^4.0.0")
• events: "^3.2.0"
• glob-to-regexp: "^0.4.1"
• graceful-fs: "^4.2.4"
• json-parse-better-errors: "^1.0.2"
• loader-runner: "^4.1.0" (was "^2.3.0")
• mime-types: "^2.1.27"
• neo-async: "^2.6.2" (was "^2.5.0")
• pkg-dir: "^4.2.0"
• schema-utils: "^3.0.0" (was "^0.4.2")
• tapable: "^2.0.0" (was "^1.0.0")
• terser-webpack-plugin: "^4.1.0"
• watchpack: "^2.0.0" (was "^1.4.0")
• webpack-sources: "^2.0.1" (was "^1.0.1")

Removed Dependencies (v5.0.0):

• acorn-dynamic-import: "^3.0.0"
• ajv: "^6.1.0"
• ajv-keywords: "^3.1.0"
• memory-fs: "~0.4.1"
• micromatch: "^3.1.8"
• mkdirp: "~0.5.0"
• node-libs-browser: "^2.0.0"
• uglifyjs-webpack-plugin: "^1.1.1"
• vm-browserify: "~0.0.0"

Key Changes Summary:

1. Major version upgrades for several core dependencies
2. WebAssembly support added with @webassemblyjs packages
3. Schema utils upgraded from v0.4.2 to v3.0.0
4. Tapable upgraded from v1.0.0 to v2.0.0
5. Loader runner upgraded from v2.3.0 to v4.1.0
6. Watchpack upgraded from v1.4.0 to v2.0.0
7. Webpack sources upgraded from v1.0.1 to v2.0.1
8. Terser webpack plugin added as a dependency
9. Events library added
10. Graceful-fs added
11. JSON parsing improved with json-parse-better-errors

Breaking Changes:

• Removed acorn-dynamic-import - dynamic imports are now handled differently
• Removed ajv and ajv-keywords - schema validation approach changed
• Removed memory-fs - file system handling changed
• Removed node-libs-browser - browser polyfills handled differently
• Removed uglifyjs-webpack-plugin - minification now handled by terser-webpack-plugin

This major version upgrade represents significant architectural changes in Webpack 5, particularly around WebAssembly support, improved performance, and modernized dependency handling.