Formkit Core Skilld

formkit/formkit @formkit/core@2.0.0

Tags: perf: 1.0.0-beta.13-c578106, latest: 2.0.0, dev: 2.0.0-dev.c6ae298

References: [Docs](./references/docs/_INDEX.md)

API Changes

This section documents version-specific API changes — prioritize recent major/minor releases.

• NEW: useFormKitContext() — v1.6.0, access parent context with optional effect callback [source](./references/releases/v1.6.0.md:L11)

• NEW: useFormKitContextById() — v1.6.0, access any context by its explicit id [source](./references/releases/v1.6.0.md:L12)

• NEW: useFormKitNodeById() — v1.6.0, access any node by its explicit id [source](./references/releases/v1.6.0.md:L13)

• NEW: stopWatch() — v1.6.0, de-registers receipts from the watchRegistry function [source](./references/releases/v1.6.0.md:L15)

• NEW: library prop — v1.6.0, adds additional components to the input schema for sections-schema [source](./references/releases/v1.6.0.md:L19)

• NEW: createInput — v1.5.0, third argument sectionsSchema allows extending default sections [source](./references/releases/v1.5.0.md:L16)

• NEW: didMount / mounted — v1.5.0, context property and node event to detect DOM mounting [source](./references/releases/v1.5.0.md:L17)

• NEW: changeLocale() — v1.5.0, globally change locale for all forms across multiple APIs [source](./references/releases/v1.5.0.md:L20)

• NEW: date_after_node — v1.7.0, compare date against another field; also date_before_node [source](./references/releases/v1.7.1.md:L11)

• NEW: passing state — v1.6.3, context.state.passing indicates if input satisfies validation rules [source](./references/releases/v1.6.3.md:L11)

• NEW: minAutoHeight — v1.7.0, prop for auto-height textarea addon to respect CSS min-height [source](./references/releases/v1.7.1.md:L13)

• BREAKING: @formkit/vue — v1.6.0, Vue is now a peer dependency to avoid multiple instance issues [source](./references/releases/v1.6.0.md:L32)

• DEPRECATED: Genesis CSS theme — v1.5.0, marked as legacy; use Tailwind themes instead [source](./references/docs/essentials/styling.md:L18)

• NEW: mergeStrategy (experimental) — v1.6.1, syncs two nodes of same name in same parent (experimental) [source](./references/releases/v1.6.1.md:L11)

Also changed: getNode() generic v1.6.0 · Boolean props shorthand v1.5.0 · summaryHeader i18n v1.7.0 · node.children reactivity v1.5.0 · FormKitTypeDefinition inference v1.6.0 · themes peer deps removed v1.7.1

Best Practices

• Read resolved configuration and prop data from node.props rather than node.config — explicit props and parent configurations are automatically merged into the props object [source](./references/docs/essentials/architecture.md#config--props)

• Synchronize multiple inputs with the same name at the same level using the mergeStrategy config option — prevents value conflicts when identical names are required by template structure [source](./references/docs/essentials/architecture.md#syncing-multiple-nodes-with-the-same-name)

• Use node.input(value) instead of direct assignment to node.value — ensures the tree's state is tracked and triggers the asynchronous settlement process [source](./references/docs/essentials/architecture.md#setting-values)

• Await node.settled before programmatically reading form values or submitting — guarantees all asynchronous input commits and side effects are complete [source](./references/docs/essentials/architecture.md#value-settlement)

• Append .deep to event names in node.on() to capture events bubbling from descendants — allows parent nodes or plugins to respond to subtree lifecycle changes [source](./references/docs/essentials/architecture.md#add-listener)

• Leverage node.ledger to create reactive, tree-wide counters for messages — efficiently sums message states (like errors or visibility) across complex form structures [source](./references/docs/essentials/architecture.md#ledger)

• Traverse the node tree using node.at() with special tokens like $root, $parent, and $self — provides a robust way to access relative nodes without hardcoding absolute paths [source](./references/docs/essentials/architecture.md#traversal)

• Opt out of defaultConfig in production to enable tree-shaking for unused rules, inputs, and locales — significantly reduces bundle size by manually registering only required features [source](./references/docs/guides/optimizing-for-production.md#a-custom-configuration)

• Register middleware via node.hook within plugins to intercept core operations — enables reusable logic for transforming props, values, or error messages across multiple forms [source](./references/docs/essentials/architecture.md#hooks)

• Always remove event listeners using the "receipt" returned by node.on() via node.off(receipt) — prevents memory leaks and redundant execution in long-lived or dynamic form contexts [source](./references/docs/essentials/architecture.md#remove-listener)

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: skilld-dev
• Source: skilld-dev/vue-ecosystem-skills
• License: MIT

Install and usage instructions live in the source repository linked above.