Core

relation

Relationship definitions, traversal helpers, and mutation failures.

Relations model directed entity links plus the explicit error surfaces used when those links cannot be created or traversed.

Use this module when plain components are not enough to express structure: parent/child scene trees, targeting links, ownership chains, attachments, or any other graph edge that should stay first-class and queryable in the ECS.

Examples

// Model a scene-graph style parent/children relationship.
const Parent = Relation.Hierarchy("Parent", "Children")

// Model another directed gameplay relationship.
const Target = Relation.Relation("Target", "TargetedBy")

Functions

success failure missingEntityError missingRelationError missingTargetEntityError selfRelationNotAllowedError hierarchyCycleError missingChildEntityError duplicateChildError childNotRelatedToParentError childSetMismatchError mutationFailure Hierarchy Relation read optional readRelated optionalRelated

Functions

Public constructors for relation descriptors and relation-aware traversal helpers.

success

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failure

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missingEntityError

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missingRelationError

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missingTargetEntityError

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selfRelationNotAllowedError

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hierarchyCycleError

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missingChildEntityError

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duplicateChildError

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childNotRelatedToParentError

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childSetMismatchError

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mutationFailure

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Hierarchy

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Relation

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read

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optional

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readRelated

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optionalRelated

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