@dxos/echo-schema NPM

@dxos/echo-schema

ECHO database.

Installation

pnpm i @dxos/echo-schema

DXOS Resources

ECHO Schema

ECHO Schema is a lightweight runtime type system to define objects independently of their storage (e.g., native file system, browser storage, ECHO)
All objects are associated with a schema definition.
Schemas are defined by EffectTS.
Schemas may be statically defined by code, or be runtime mutable.
Each space maintains a schema registry.
Schema definitions are versioned with semvar semantics.
- Objects created with a schema version lower than the current major/minor version must be migrated.
- Non-migrated objects are not visible to queries unless explicitly requested.
Schema definitions are serializable via JSON schema.
Properties may include strong and weak references to other objects.
- Strong references define an owning relationship indicating that referenced objects should be deleted (or migrated) when the parent object is deleted.
Objects include the following metadata:
- Schema name (immutable)
- Schema version: updated during schema migration
- Version
- Creation time (immutable)
- Last mutation time

Contributions

Your ideas, issues, and code are most welcome. Please take a look at our community code of conduct, the issue guide, and the PR contribution guide.

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