The entire TypeScript API definition is published as the blueboat-types package. This issue tracks the API surface on a high level:

Tier 1

Tier 1 APIs are stable interfaces exposed by Blueboat. Incompatible changes require a semver major.

• Standard JavaScript features supported by V8
• A subset of the Web platform API
  • fetch(), Request and Response objects
  • TextEncoder, TextDecoder
  • Timers
    • setTimeout, clearTimeout
    • setInterval, clearInterval
  • URL, URLSearchParams
  • crypto.getRandomValues
  • crypto.randomUUID
  • crypto.subtle (NativeCrypto can be used instead)
  • console
    • console.log()
    • console.warn()
    • console.error()
• Request router
  • The Router object
• Cryptography extensions
  • Ed25519 and X25519: NativeCrypto.Ed25519, NativeCrypto.X25519
  • JWT signing and verification: NativeCrypto.JWT
  • Hashing: NativeCrypto.digest
  • Constant time comparison: NativeCrypto.constantTimeEq
  • AEAD: NativeCrypto.AEAD
    • AES128-GCM-SIV: NativeCrypto.AEAD.{aes128GcmSivEncrypt,aes128GcmSivDecrypt}
  • HMAC: NativeCrypto.HMAC
    • HMAC-SHA256: NativeCrypto.HMAC.hmacSha256
• Template API
  • Tera template rendering: Template.render()
• Encoding and decoding
  • Codec.hexencode(), Codec.hexdecode()
  • Codec.b64encode(), Codec.b64decode()
• Embedded datasets
  • MIME type guessing: Dataset.Mime.guessByExt()
• Text utilities
  • YAML serialization and deserialization: TextUtil.Yaml.parse(), TextUtil.Yaml.stringify()
  • Markdown rendering: TextUtil.Markdown.renderToHtml()
• Data compression
  • Zstd
    • Block compression: Compress.Zstd.blockCompress
    • Block decompression: Compress.Zstd.blockDecompress

Tier 2

Tier 2 APIs are experimental - incompatible changes can be made within a major version.

• Graphics API
  • Canvas (Graphics.Canvas)
  • Layout constraint solver based on Z3 (Graphics.Layout)
• Background tasks
  • Background.atMostOnce()
  • Background.atLeastOnce()
  • Background.delayed()
• Data validation
  • JSON Type Definition validation: Validation.JTD
• Native API to external services
  • MySQL client
  • Apple Push Notification Service (APNS) client
  • AWS
    • v4 request signing: ExternalService.AWS.sign
    • Presigned URL: ExternalService.AWS.getPresignedUrl
  • GitHub
    • octokit.js exported at ExternalService.GitHub
• DOM API
  • XML: TextUtil.DOM.HTML
  • HTML: TextUtil.DOM.XML
• Distributed system primitives
  • Key-value store
    • KV.Namespace
  • Message queue
    • App.pubsub
    • Client-side API: /_blueboat/events
• Encoding and decoding
  • multipart/form-data parser: Codec.Multipart.decode