Browser Fetch API Compatibility v0.7.0

🎯 Overview

This PR implements Browser Fetch API compatibility for the HTTP Fetch library, achieving ~85% API parity with JavaScript's Fetch API.

✨ Features Added

Response Properties (Browser API Standard)

• ✅ status_text - Status message ("OK", "Not Found", etc.)
• ✅ ok - Boolean for success status (200-299)
• ✅ body_used - Body consumption tracking
• ✅ redirected - Redirect detection
• ✅ type - Response type (:basic, :cors, :error, :opaque)

Response Methods

• ✅ Response.new/1 - Constructor with auto-populated Browser API fields
• ✅ Response.clone/1 - Clone for multiple reads
• ✅ Response.arrayBuffer/1 - Read as binary (ArrayBuffer equivalent)
• ✅ Response.blob/1 - Read as Blob with metadata

New Modules

• ✅ HTTP.StatusText - 60+ status code mappings
• ✅ HTTP.Blob - Blob struct with data, type, and size

⚠️ Breaking Changes

Response Struct Fields Added

Five new fields: status_text, ok, body_used, redirected, type

Migration

Pattern matches need updating:

# Before
%Response{status: 200, headers: headers, body: body}

# After (ignore new fields)
%Response{status: 200, body: body} = response

📊 Test Coverage

41 tests, 0 failures (100% pass rate)

🔍 Files Changed

• ✅ 8 files changed, 950 insertions(+), 31 deletions(-)
• ✅ 3 new files: lib/http/blob.ex, lib/http/status_text.ex, tests
• ✅ Updated: README, CHANGELOG, Response module, HTTP module, mix.exs

🎯 Browser API Usage Examples

response = HTTP.fetch("https://api.example.com/data") |> HTTP.Promise.await()

# Browser Fetch API properties
response.status        # 200
response.status_text   # "OK"
response.ok            # true
response.redirected    # false

# Clone for multiple reads
clone = HTTP.Response.clone(response)
json = HTTP.Response.json(response)
text = HTTP.Response.text(clone)

# Read as binary or Blob
binary = HTTP.Response.arrayBuffer(response)
blob = HTTP.Response.blob(response)

✅ Checklist

• All tests passing (41/41)
• Compilation successful
• Documentation updated
• Breaking changes documented
• Semantic versioning commit

API Parity: ~85% Browser Fetch API compatibility 🎉