feat(builder): add dynamic blocks email and dnd packages
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Clintchiz committed
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@@ -0,0 +1,65 @@
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import { duplicateNodes } from "./commands.ts";
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import type { BlockNode, Result } from "./types.ts";
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export const BLOCK_CLIPBOARD_MIME = "application/x-wrnexus-blocks+json";
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export interface BlockClipboardEnvelope {
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format: typeof BLOCK_CLIPBOARD_MIME;
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version: 1;
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sourceKind: string;
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roots: BlockNode[];
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requiredTypes: Array<{ type: string; version: number }>;
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}
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export function encodeClipboard(sourceKind: string, roots: readonly BlockNode[]): string {
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const required = new Map<string, number>();
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const visit = (node: BlockNode) => {
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required.set(node.type, Math.max(required.get(node.type) ?? 0, node.version));
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for (const children of Object.values(node.slots)) children.forEach(visit);
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};
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roots.forEach(visit);
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return JSON.stringify({
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format: BLOCK_CLIPBOARD_MIME,
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version: 1,
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sourceKind,
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roots,
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requiredTypes: [...required]
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.sort(([a], [b]) => a.localeCompare(b))
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.map(([type, version]) => ({ type, version })),
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});
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}
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export function decodeClipboard(
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value: string,
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id: () => string,
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maxBytes = 250_000,
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): Result<BlockClipboardEnvelope> {
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if (new TextEncoder().encode(value).byteLength > maxBytes)
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return {
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ok: false,
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errors: [
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{ code: "clipboard.size", message: "Clipboard content is too large.", severity: "error" },
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],
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};
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try {
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const parsed = JSON.parse(value) as BlockClipboardEnvelope;
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if (
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parsed.format !== BLOCK_CLIPBOARD_MIME ||
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parsed.version !== 1 ||
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!Array.isArray(parsed.roots)
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)
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throw new Error();
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return { ok: true, value: { ...parsed, roots: duplicateNodes(parsed.roots, id) } };
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} catch {
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return {
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ok: false,
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errors: [
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{
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code: "clipboard.format",
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message: "Clipboard does not contain WRNexus blocks.",
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severity: "error",
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},
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],
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};
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}
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}
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@@ -0,0 +1,233 @@
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import { findBlock, validateDocument } from "./document.ts";
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import type { DocumentKindDefinition } from "./kinds.ts";
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import type { ReadonlyBlockRegistry } from "./registry.ts";
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import type {
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BlockDocument,
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BlockLocation,
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BlockNode,
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BlockStyles,
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Diagnostic,
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JsonObject,
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MoveIntent,
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Result,
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SelectionState,
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} from "./types.ts";
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export type BlockCommand =
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| { type: "insert"; location: BlockLocation; nodes: BlockNode[] }
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| { type: "remove"; nodeIds: string[] }
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| { type: "move"; intent: MoveIntent }
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| { type: "updateProps"; nodeId: string; patch: JsonObject }
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| { type: "updateStyles"; nodeId: string; patch: BlockStyles }
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| { type: "replace"; nodeId: string; node: BlockNode }
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| { type: "batch"; commands: BlockCommand[] };
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export interface CommandResult {
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document: BlockDocument;
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inverse: BlockCommand;
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affectedIds: string[];
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selection: SelectionState;
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diagnostics: Diagnostic[];
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}
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const clone = <T>(value: T): T => structuredClone(value);
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function updateNode(
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root: BlockNode,
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id: string,
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update: (node: BlockNode) => BlockNode,
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): BlockNode {
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if (root.id === id) return update(root);
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const slots: Record<string, BlockNode[]> = {};
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for (const [name, children] of Object.entries(root.slots))
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slots[name] = children.map((child) => updateNode(child, id, update));
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return { ...root, slots };
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}
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function locationOf(root: BlockNode, id: string): BlockLocation | undefined {
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for (const [slot, children] of Object.entries(root.slots)) {
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const index = children.findIndex((child) => child.id === id);
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if (index >= 0) return { parentId: root.id, slot, index };
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for (const child of children) {
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const nested = locationOf(child, id);
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if (nested) return nested;
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}
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}
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}
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function insert(root: BlockNode, location: BlockLocation, nodes: BlockNode[]): BlockNode {
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return updateNode(root, location.parentId, (parent) => {
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const children = [...(parent.slots[location.slot] ?? [])];
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children.splice(location.index, 0, ...nodes);
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return { ...parent, slots: { ...parent.slots, [location.slot]: children } };
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});
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}
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function remove(root: BlockNode, ids: Set<string>): BlockNode {
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const slots: Record<string, BlockNode[]> = {};
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for (const [name, children] of Object.entries(root.slots))
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slots[name] = children.filter((child) => !ids.has(child.id)).map((child) => remove(child, ids));
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return { ...root, slots };
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}
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export function applyCommand(
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document: BlockDocument,
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command: BlockCommand,
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kind: DocumentKindDefinition,
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registry: ReadonlyBlockRegistry,
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): Result<CommandResult> {
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if (command.type === "batch") {
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let current = document;
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const inverses: BlockCommand[] = [];
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const affected: string[] = [];
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for (const child of command.commands) {
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const result = applyCommand(current, child, kind, registry);
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if (!result.ok) return result;
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current = result.value.document;
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inverses.unshift(result.value.inverse);
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affected.push(...result.value.affectedIds);
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}
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return {
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ok: true,
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value: {
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document: current,
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inverse: { type: "batch", commands: inverses },
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affectedIds: [...new Set(affected)],
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selection: { primary: affected.at(-1) ?? null, ordered: [...new Set(affected)] },
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diagnostics: [],
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},
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};
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}
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let root = document.root;
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let inverse: BlockCommand;
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let affected: string[];
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if (command.type === "insert") {
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root = insert(root, command.location, clone(command.nodes));
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affected = command.nodes.map((node) => node.id);
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inverse = { type: "remove", nodeIds: affected };
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} else if (command.type === "remove") {
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const captures = command.nodeIds.map((id) => ({
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node: findBlock(root, id),
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location: locationOf(root, id),
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}));
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if (captures.some((item) => !item.node || !item.location))
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return {
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ok: false,
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errors: [
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{
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code: "command.missing",
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message: "Cannot remove the root or a missing block.",
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severity: "error",
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},
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],
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};
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root = remove(root, new Set(command.nodeIds));
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affected = command.nodeIds;
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inverse = {
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type: "batch",
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commands: captures.map((item) => ({
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type: "insert",
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location: item.location!,
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nodes: [item.node!],
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})),
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};
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} else if (command.type === "move") {
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const moving = command.intent.nodeIds.map((id) => findBlock(root, id));
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if (moving.some((node) => !node))
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return {
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ok: false,
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errors: [
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{ code: "command.missing", message: "A moved block does not exist.", severity: "error" },
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],
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};
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for (const node of moving)
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if (node && findBlock(node, command.intent.to.parentId))
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return {
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ok: false,
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errors: [
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{
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code: "command.cycle",
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message: "A block cannot move into its descendant.",
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severity: "error",
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},
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],
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};
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root = insert(
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remove(root, new Set(command.intent.nodeIds)),
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command.intent.to,
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moving as BlockNode[],
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);
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affected = command.intent.nodeIds;
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inverse = {
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type: "batch",
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commands: command.intent.from.map((location, index) => ({
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type: "move",
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intent: {
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nodeIds: [command.intent.nodeIds[index]!],
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from: [command.intent.to],
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to: location,
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},
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})),
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};
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} else if (command.type === "updateProps") {
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const previous = findBlock(root, command.nodeId);
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if (!previous)
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return {
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ok: false,
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errors: [{ code: "command.missing", message: "Block does not exist.", severity: "error" }],
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};
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root = updateNode(root, command.nodeId, (node) => ({
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...node,
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props: { ...node.props, ...command.patch },
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}));
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affected = [command.nodeId];
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inverse = { type: "replace", nodeId: command.nodeId, node: clone(previous) };
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} else if (command.type === "updateStyles") {
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const previous = findBlock(root, command.nodeId);
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if (!previous)
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return {
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ok: false,
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errors: [{ code: "command.missing", message: "Block does not exist.", severity: "error" }],
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};
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root = updateNode(root, command.nodeId, (node) => ({
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...node,
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styles: { ...node.styles, ...command.patch },
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}));
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affected = [command.nodeId];
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inverse = { type: "replace", nodeId: command.nodeId, node: clone(previous) };
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} else {
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const previous = findBlock(root, command.nodeId);
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if (!previous)
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return {
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ok: false,
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errors: [{ code: "command.missing", message: "Block does not exist.", severity: "error" }],
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};
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root = updateNode(root, command.nodeId, () => clone(command.node));
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affected = [command.node.id];
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inverse = { type: "replace", nodeId: command.node.id, node: clone(previous) };
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}
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const next = { ...document, root };
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const valid = validateDocument(next, kind, registry);
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if (!valid.ok) return valid;
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return {
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ok: true,
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value: {
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document: next,
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inverse,
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affectedIds: affected,
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selection: { primary: affected[0] ?? null, ordered: affected },
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diagnostics: [],
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},
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};
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}
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export function duplicateNodes(nodes: readonly BlockNode[], id: () => string): BlockNode[] {
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const copy = (node: BlockNode): BlockNode => ({
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...clone(node),
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id: id(),
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slots: Object.fromEntries(
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Object.entries(node.slots).map(([name, children]) => [name, children.map(copy)]),
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),
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});
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return nodes.map(copy);
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}
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@@ -0,0 +1,165 @@
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import type { BlockRegistry, ReadonlyBlockRegistry } from "./registry.ts";
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import type { DocumentKindDefinition } from "./kinds.ts";
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import {
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DEFAULT_LIMITS,
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type BlockDocument,
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type BlockNode,
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type Diagnostic,
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type Result,
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} from "./types.ts";
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const byteLength = (value: string): number => new TextEncoder().encode(value).byteLength;
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export function walkBlocks(
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root: BlockNode,
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visitor: (node: BlockNode, depth: number) => void,
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): void {
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const visit = (node: BlockNode, depth: number) => {
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visitor(node, depth);
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for (const slot of Object.keys(node.slots).sort())
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for (const child of node.slots[slot] ?? []) visit(child, depth + 1);
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};
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visit(root, 0);
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}
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export function findBlock(root: BlockNode, id: string): BlockNode | undefined {
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let found: BlockNode | undefined;
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walkBlocks(root, (node) => {
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if (node.id === id) found = node;
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});
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return found;
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}
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export function validateDocument(
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document: BlockDocument,
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kind: DocumentKindDefinition,
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registry: ReadonlyBlockRegistry,
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): Result<BlockDocument> {
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const errors: Diagnostic[] = [];
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const limits = kind.limits ?? DEFAULT_LIMITS;
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let encoded = "";
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try {
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encoded = JSON.stringify(document);
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} catch {
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errors.push({
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code: "document.json",
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message: "Document must be JSON-serializable.",
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severity: "error",
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});
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}
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if (byteLength(encoded) > limits.maxBytes)
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errors.push({
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code: "document.size",
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message: `Document exceeds ${limits.maxBytes} bytes.`,
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severity: "error",
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});
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if (document.kind !== kind.kind)
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errors.push({
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code: "document.kind",
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message: `Expected document kind ${kind.kind}.`,
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severity: "error",
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});
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if (!kind.rootTypes.includes(document.root.type))
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errors.push({
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code: "document.root",
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message: `Block ${document.root.type} cannot be the root.`,
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severity: "error",
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nodeId: document.root.id,
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});
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const meta = kind.metadata.parse(document.meta, "meta");
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if (!meta.ok) errors.push(...meta.errors);
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const ids = new Set<string>();
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let count = 0;
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walkBlocks(document.root, (node, depth) => {
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count++;
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if (!node.id || ids.has(node.id))
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errors.push({
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code: "document.id",
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message: `Duplicate or empty block id ${node.id}.`,
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severity: "error",
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nodeId: node.id,
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});
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ids.add(node.id);
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if (depth > limits.maxDepth)
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errors.push({
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code: "document.depth",
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message: `Document exceeds depth ${limits.maxDepth}.`,
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severity: "error",
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nodeId: node.id,
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});
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const definition = registry.get(node.type);
|
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if (!definition) {
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errors.push({
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code: "document.unknown-block",
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message: `Unknown block type ${node.type}.`,
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severity: "error",
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nodeId: node.id,
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});
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return;
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}
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if (node.version !== definition.manifest.version)
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errors.push({
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code: "document.block-version",
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message: `${node.type} requires migration to version ${definition.manifest.version}.`,
|
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severity: "error",
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nodeId: node.id,
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});
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const props = definition.manifest.props.parse(node.props, `blocks.${node.id}.props`);
|
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if (!props.ok) errors.push(...props.errors.map((error) => ({ ...error, nodeId: node.id })));
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const styles = definition.manifest.styles.parse(node.styles, `blocks.${node.id}.styles`);
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if (!styles.ok) errors.push(...styles.errors.map((error) => ({ ...error, nodeId: node.id })));
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for (const slotName of Object.keys(node.slots))
|
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if (!(slotName in definition.manifest.slots))
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errors.push({
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code: "document.slot",
|
||||
message: `Unknown slot ${slotName} on ${node.type}.`,
|
||||
severity: "error",
|
||||
nodeId: node.id,
|
||||
});
|
||||
for (const [slotName, slot] of Object.entries(definition.manifest.slots)) {
|
||||
const children = node.slots[slotName] ?? [];
|
||||
const maximum = Math.min(
|
||||
slot.maxChildren ?? limits.maxChildrenPerSlot,
|
||||
limits.maxChildrenPerSlot,
|
||||
);
|
||||
if (children.length < (slot.minChildren ?? 0) || children.length > maximum)
|
||||
errors.push({
|
||||
code: "document.cardinality",
|
||||
message: `Slot ${slotName} has invalid child count.`,
|
||||
severity: "error",
|
||||
nodeId: node.id,
|
||||
});
|
||||
for (const child of children) {
|
||||
const childDefinition = registry.get(child.type);
|
||||
const acceptedType = !slot.accepts?.types || slot.accepts.types.includes(child.type);
|
||||
const acceptedCapabilities =
|
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!slot.accepts?.capabilities ||
|
||||
slot.accepts.capabilities.every((capability) =>
|
||||
childDefinition?.manifest.capabilities?.includes(capability),
|
||||
);
|
||||
if (!acceptedType || !acceptedCapabilities)
|
||||
errors.push({
|
||||
code: "document.slot-accept",
|
||||
message: `${child.type} is not accepted by ${node.type}.${slotName}.`,
|
||||
severity: "error",
|
||||
nodeId: child.id,
|
||||
});
|
||||
}
|
||||
}
|
||||
errors.push(...(definition.validate?.(node) ?? []));
|
||||
});
|
||||
if (count > limits.maxNodes)
|
||||
errors.push({
|
||||
code: "document.nodes",
|
||||
message: `Document exceeds ${limits.maxNodes} nodes.`,
|
||||
severity: "error",
|
||||
});
|
||||
return errors.length ? { ok: false, errors } : { ok: true, value: document };
|
||||
}
|
||||
|
||||
export function registryForKind(kind: DocumentKindDefinition): BlockRegistry {
|
||||
const registry = createRegistry(kind.blocks);
|
||||
return registry;
|
||||
}
|
||||
|
||||
import { createRegistry } from "./registry.ts";
|
||||
@@ -0,0 +1,8 @@
|
||||
export * from "./types.ts";
|
||||
export * from "./schema.ts";
|
||||
export * from "./registry.ts";
|
||||
export * from "./kinds.ts";
|
||||
export * from "./document.ts";
|
||||
export * from "./commands.ts";
|
||||
export * from "./clipboard.ts";
|
||||
export * from "./render.ts";
|
||||
@@ -0,0 +1,20 @@
|
||||
import type { DocumentLimits, JsonObject } from "./types.ts";
|
||||
import type { ValueSchema } from "./schema.ts";
|
||||
import type { BlockDefinition } from "./registry.ts";
|
||||
|
||||
export interface DocumentKindDefinition {
|
||||
kind: string;
|
||||
version: number;
|
||||
metadata: ValueSchema<JsonObject>;
|
||||
rootTypes: string[];
|
||||
blocks: readonly BlockDefinition[];
|
||||
variables: Record<string, "string" | "number" | "date" | "boolean">;
|
||||
breakpoints: Record<string, number>;
|
||||
capabilities: string[];
|
||||
targets: string[];
|
||||
limits: DocumentLimits;
|
||||
urlSchemes: string[];
|
||||
}
|
||||
|
||||
export const defineDocumentKind = <T extends DocumentKindDefinition>(definition: T): T =>
|
||||
definition;
|
||||
@@ -0,0 +1,143 @@
|
||||
import type { BlockNode, Diagnostic, JsonObject, Result } from "./types.ts";
|
||||
import type { ValueSchema } from "./schema.ts";
|
||||
|
||||
export interface LocalizedLabel {
|
||||
key: string;
|
||||
fallback: string;
|
||||
}
|
||||
export type BlockCapability = string;
|
||||
|
||||
export interface SlotDefinition {
|
||||
label?: LocalizedLabel;
|
||||
accepts?: { types?: string[]; capabilities?: string[] };
|
||||
minChildren?: number;
|
||||
maxChildren?: number;
|
||||
orientation?: "vertical" | "horizontal" | "grid";
|
||||
sortable?: boolean;
|
||||
}
|
||||
|
||||
export interface InspectorControl {
|
||||
kind: string;
|
||||
path: `props.${string}` | `styles.${string}`;
|
||||
label?: LocalizedLabel;
|
||||
options?: string[];
|
||||
}
|
||||
|
||||
export interface BlockManifest {
|
||||
type: string;
|
||||
version: number;
|
||||
name: LocalizedLabel;
|
||||
description?: LocalizedLabel;
|
||||
icon: string;
|
||||
category: string;
|
||||
tags?: string[];
|
||||
capabilities?: BlockCapability[];
|
||||
props: ValueSchema<JsonObject>;
|
||||
styles: ValueSchema<Record<string, unknown>>;
|
||||
slots: Record<string, SlotDefinition>;
|
||||
}
|
||||
|
||||
export interface BlockRenderContext {
|
||||
node: BlockNode;
|
||||
slots: Readonly<Record<string, string>>;
|
||||
context: unknown;
|
||||
}
|
||||
export type BlockRenderer = (input: BlockRenderContext) => string | Promise<string>;
|
||||
|
||||
export interface BlockDefinition {
|
||||
manifest: BlockManifest;
|
||||
create(context: { id(): string }): BlockNode;
|
||||
normalize?(node: BlockNode): BlockNode;
|
||||
validate?(node: BlockNode): Diagnostic[];
|
||||
resolveStyles?(
|
||||
styles: Record<string, unknown>,
|
||||
context: unknown,
|
||||
): Record<string, string | number>;
|
||||
renderers?: Record<string, BlockRenderer>;
|
||||
textRenderer?: BlockRenderer;
|
||||
editor?: { controls: InspectorControl[]; outlineLabel?(node: BlockNode): string };
|
||||
migrations?: Array<{ from: number; to: number; up(node: BlockNode): BlockNode }>;
|
||||
}
|
||||
|
||||
export const defineBlock = <T extends BlockDefinition>(definition: T): T => definition;
|
||||
|
||||
export interface BlockRegistry {
|
||||
get(type: string): BlockDefinition | undefined;
|
||||
has(type: string): boolean;
|
||||
list(): readonly BlockDefinition[];
|
||||
register(definition: BlockDefinition): () => void;
|
||||
freeze(): ReadonlyBlockRegistry;
|
||||
}
|
||||
|
||||
export type ReadonlyBlockRegistry = Pick<BlockRegistry, "get" | "has" | "list">;
|
||||
|
||||
const TYPE = /^[a-z][a-z0-9]*(?:[.-][a-z0-9]+)+$/;
|
||||
|
||||
function validateDefinition(definition: BlockDefinition): Result<BlockDefinition> {
|
||||
const errors: Diagnostic[] = [];
|
||||
const { manifest } = definition;
|
||||
if (!TYPE.test(manifest.type))
|
||||
errors.push({
|
||||
code: "registry.type",
|
||||
message: `Invalid block type ${manifest.type}.`,
|
||||
severity: "error",
|
||||
});
|
||||
if (!Number.isInteger(manifest.version) || manifest.version < 1)
|
||||
errors.push({
|
||||
code: "registry.version",
|
||||
message: "Block version must be a positive integer.",
|
||||
severity: "error",
|
||||
});
|
||||
if (!manifest.name?.key || !manifest.name.fallback)
|
||||
errors.push({
|
||||
code: "registry.name",
|
||||
message: "Block name key and fallback are required.",
|
||||
severity: "error",
|
||||
});
|
||||
for (const control of definition.editor?.controls ?? []) {
|
||||
if (!/^(props|styles)\.[A-Za-z0-9_.-]+$/.test(control.path))
|
||||
errors.push({
|
||||
code: "registry.control",
|
||||
message: `Invalid inspector path ${control.path}.`,
|
||||
severity: "error",
|
||||
});
|
||||
}
|
||||
const migrations = definition.migrations ?? [];
|
||||
for (let version = 1; version < manifest.version; version++) {
|
||||
if (!migrations.some((migration) => migration.from === version && migration.to === version + 1))
|
||||
errors.push({
|
||||
code: "registry.migration",
|
||||
message: `Missing ${manifest.type} migration ${version} -> ${version + 1}.`,
|
||||
severity: "error",
|
||||
});
|
||||
}
|
||||
return errors.length ? { ok: false, errors } : { ok: true, value: definition };
|
||||
}
|
||||
|
||||
export function createRegistry(initial: readonly BlockDefinition[] = []): BlockRegistry {
|
||||
const entries = new Map<string, BlockDefinition>();
|
||||
let frozen = false;
|
||||
const registry: BlockRegistry = {
|
||||
get: (type) => entries.get(type),
|
||||
has: (type) => entries.has(type),
|
||||
list: () => [...entries.values()],
|
||||
register(definition) {
|
||||
if (frozen) throw new Error("Block registry is frozen.");
|
||||
const valid = validateDefinition(definition);
|
||||
if (!valid.ok)
|
||||
throw new Error(valid.errors.map((error) => `${error.code}: ${error.message}`).join("\n"));
|
||||
if (entries.has(definition.manifest.type))
|
||||
throw new Error(`Duplicate block type ${definition.manifest.type}.`);
|
||||
entries.set(definition.manifest.type, definition);
|
||||
return () => {
|
||||
if (!frozen) entries.delete(definition.manifest.type);
|
||||
};
|
||||
},
|
||||
freeze() {
|
||||
frozen = true;
|
||||
return registry;
|
||||
},
|
||||
};
|
||||
for (const definition of initial) registry.register(definition);
|
||||
return registry;
|
||||
}
|
||||
@@ -0,0 +1,73 @@
|
||||
import { validateDocument } from "./document.ts";
|
||||
import type { DocumentKindDefinition } from "./kinds.ts";
|
||||
import type { ReadonlyBlockRegistry } from "./registry.ts";
|
||||
import type { BlockDocument, BlockNode, Diagnostic, Result } from "./types.ts";
|
||||
|
||||
export interface RenderContext {
|
||||
target: string;
|
||||
locale: string;
|
||||
timezone: string;
|
||||
direction: "ltr" | "rtl";
|
||||
data?: Record<string, unknown>;
|
||||
resolveAsset?: (reference: string) => Promise<string>;
|
||||
}
|
||||
|
||||
export interface RenderOutput {
|
||||
content: string;
|
||||
warnings: Diagnostic[];
|
||||
}
|
||||
|
||||
export async function renderTree(
|
||||
document: BlockDocument,
|
||||
kind: DocumentKindDefinition,
|
||||
registry: ReadonlyBlockRegistry,
|
||||
context: RenderContext,
|
||||
): Promise<Result<RenderOutput>> {
|
||||
const valid = validateDocument(document, kind, registry);
|
||||
if (!valid.ok) return valid;
|
||||
const warnings: Diagnostic[] = [];
|
||||
const renderNode = async (node: BlockNode): Promise<string> => {
|
||||
const definition = registry.get(node.type)!;
|
||||
const renderer =
|
||||
context.target === "plainText"
|
||||
? definition.textRenderer
|
||||
: definition.renderers?.[context.target];
|
||||
if (!renderer) throw new Error(`Block ${node.type} does not support ${context.target}.`);
|
||||
const slots: Record<string, string> = {};
|
||||
for (const name of Object.keys(definition.manifest.slots))
|
||||
slots[name] = (node.slots[name] ?? []).length
|
||||
? (await Promise.all((node.slots[name] ?? []).map(renderNode))).join("")
|
||||
: "";
|
||||
return renderer({ node, slots, context });
|
||||
};
|
||||
try {
|
||||
const content = await renderNode(document.root);
|
||||
if (new TextEncoder().encode(content).byteLength > kind.limits.maxOutputBytes)
|
||||
return {
|
||||
ok: false,
|
||||
errors: [
|
||||
{ code: "render.size", message: "Rendered output is too large.", severity: "error" },
|
||||
],
|
||||
};
|
||||
return { ok: true, value: { content, warnings } };
|
||||
} catch (error) {
|
||||
return {
|
||||
ok: false,
|
||||
errors: [
|
||||
{
|
||||
code: "render.failed",
|
||||
message: error instanceof Error ? error.message : "Rendering failed.",
|
||||
severity: "error",
|
||||
},
|
||||
],
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
export const escapeHtml = (value: unknown): string =>
|
||||
String(value ?? "")
|
||||
.replaceAll("&", "&")
|
||||
.replaceAll("<", "<")
|
||||
.replaceAll(">", ">")
|
||||
.replaceAll('"', """)
|
||||
.replaceAll("'", "'");
|
||||
@@ -0,0 +1,173 @@
|
||||
import type { Diagnostic, JsonValue, Result } from "./types.ts";
|
||||
|
||||
export interface ValueSchema<T = unknown> {
|
||||
readonly kind: string;
|
||||
parse(value: unknown, path?: string): Result<T>;
|
||||
readonly defaultValue?: T;
|
||||
}
|
||||
|
||||
const fail = (code: string, message: string, path: string): Result<never> => ({
|
||||
ok: false,
|
||||
errors: [{ code, message, severity: "error", path }],
|
||||
});
|
||||
|
||||
export function string(
|
||||
options: { min?: number; max?: number; default?: string } = {},
|
||||
): ValueSchema<string> {
|
||||
return {
|
||||
kind: "string",
|
||||
defaultValue: options.default,
|
||||
parse(value, path = "value") {
|
||||
if (value === undefined && options.default !== undefined)
|
||||
return { ok: true, value: options.default };
|
||||
if (typeof value !== "string") return fail("schema.string", "Expected a string.", path);
|
||||
if (options.min !== undefined && value.length < options.min)
|
||||
return fail("schema.string.min", `Must contain at least ${options.min} characters.`, path);
|
||||
if (options.max !== undefined && value.length > options.max)
|
||||
return fail("schema.string.max", `Must contain at most ${options.max} characters.`, path);
|
||||
return { ok: true, value };
|
||||
},
|
||||
};
|
||||
}
|
||||
|
||||
export function number(
|
||||
options: { min?: number; max?: number; default?: number } = {},
|
||||
): ValueSchema<number> {
|
||||
return {
|
||||
kind: "number",
|
||||
defaultValue: options.default,
|
||||
parse(value, path = "value") {
|
||||
if (value === undefined && options.default !== undefined)
|
||||
return { ok: true, value: options.default };
|
||||
if (typeof value !== "number" || !Number.isFinite(value))
|
||||
return fail("schema.number", "Expected a finite number.", path);
|
||||
if (options.min !== undefined && value < options.min)
|
||||
return fail("schema.number.min", `Must be at least ${options.min}.`, path);
|
||||
if (options.max !== undefined && value > options.max)
|
||||
return fail("schema.number.max", `Must be at most ${options.max}.`, path);
|
||||
return { ok: true, value };
|
||||
},
|
||||
};
|
||||
}
|
||||
|
||||
export function boolean(defaultValue?: boolean): ValueSchema<boolean> {
|
||||
return {
|
||||
kind: "boolean",
|
||||
defaultValue,
|
||||
parse(value, path = "value") {
|
||||
if (value === undefined && defaultValue !== undefined)
|
||||
return { ok: true, value: defaultValue };
|
||||
return typeof value === "boolean"
|
||||
? { ok: true, value }
|
||||
: fail("schema.boolean", "Expected a boolean.", path);
|
||||
},
|
||||
};
|
||||
}
|
||||
|
||||
export function choice<const T extends readonly string[]>(
|
||||
values: T,
|
||||
options: { default?: T[number] } = {},
|
||||
): ValueSchema<T[number]> {
|
||||
const allowed = new Set<string>(values);
|
||||
return {
|
||||
kind: "choice",
|
||||
defaultValue: options.default,
|
||||
parse(value, path = "value") {
|
||||
if (value === undefined && options.default !== undefined)
|
||||
return { ok: true, value: options.default };
|
||||
return typeof value === "string" && allowed.has(value)
|
||||
? { ok: true, value: value as T[number] }
|
||||
: fail("schema.choice", `Expected one of: ${values.join(", ")}.`, path);
|
||||
},
|
||||
};
|
||||
}
|
||||
|
||||
export function safeUrl(
|
||||
options: { schemes?: string[]; optional?: boolean } = {},
|
||||
): ValueSchema<string> {
|
||||
const schemes = new Set((options.schemes ?? ["https"]).map((value) => value.replace(/:$/, "")));
|
||||
return {
|
||||
kind: "url",
|
||||
parse(value, path = "value") {
|
||||
if ((value === undefined || value === "") && options.optional) return { ok: true, value: "" };
|
||||
if (typeof value !== "string" || value.length > 4_096)
|
||||
return fail("schema.url", "Expected a bounded URL.", path);
|
||||
try {
|
||||
const parsed = new URL(value);
|
||||
return schemes.has(parsed.protocol.replace(/:$/, ""))
|
||||
? { ok: true, value: parsed.href }
|
||||
: fail("schema.url.scheme", `URL scheme ${parsed.protocol} is not allowed.`, path);
|
||||
} catch {
|
||||
return fail("schema.url", "Expected an absolute URL.", path);
|
||||
}
|
||||
},
|
||||
};
|
||||
}
|
||||
|
||||
export function object<T extends Record<string, ValueSchema>>(
|
||||
shape: T,
|
||||
): ValueSchema<{ [K in keyof T]: ReturnType<T[K]["parse"]> extends Result<infer V> ? V : never }> {
|
||||
return {
|
||||
kind: "object",
|
||||
parse(value, path = "value") {
|
||||
if (!value || typeof value !== "object" || Array.isArray(value))
|
||||
return fail("schema.object", "Expected an object.", path);
|
||||
const source = value as Record<string, unknown>;
|
||||
const output: Record<string, unknown> = {};
|
||||
const errors: Diagnostic[] = [];
|
||||
for (const key of Object.keys(source)) {
|
||||
if (!(key in shape))
|
||||
errors.push({
|
||||
code: "schema.unknown",
|
||||
message: `Unknown field ${key}.`,
|
||||
severity: "error",
|
||||
path: `${path}.${key}`,
|
||||
});
|
||||
}
|
||||
for (const [key, schema] of Object.entries(shape)) {
|
||||
const result = schema.parse(source[key], `${path}.${key}`);
|
||||
if (result.ok) output[key] = result.value;
|
||||
else errors.push(...result.errors);
|
||||
}
|
||||
return errors.length ? { ok: false, errors } : { ok: true, value: output as never };
|
||||
},
|
||||
};
|
||||
}
|
||||
|
||||
export const json: ValueSchema<JsonValue> = {
|
||||
kind: "json",
|
||||
parse(value, path = "value") {
|
||||
try {
|
||||
const encoded = JSON.stringify(value);
|
||||
if (encoded === undefined)
|
||||
return fail("schema.json", "Expected JSON-serializable data.", path);
|
||||
return { ok: true, value: JSON.parse(encoded) as JsonValue };
|
||||
} catch {
|
||||
return fail("schema.json", "Expected JSON-serializable data.", path);
|
||||
}
|
||||
},
|
||||
};
|
||||
|
||||
export function record<T>(
|
||||
valueSchema: ValueSchema<T>,
|
||||
options: { maxKeys?: number } = {},
|
||||
): ValueSchema<Record<string, T>> {
|
||||
return {
|
||||
kind: "record",
|
||||
parse(value, path = "value") {
|
||||
if (!value || typeof value !== "object" || Array.isArray(value))
|
||||
return fail("schema.record", "Expected an object.", path);
|
||||
const entries = Object.entries(value as Record<string, unknown>);
|
||||
if (entries.length > (options.maxKeys ?? 100))
|
||||
return fail("schema.record.size", "Object contains too many fields.", path);
|
||||
const output: Record<string, T> = {};
|
||||
const errors: Diagnostic[] = [];
|
||||
for (const [key, raw] of entries) {
|
||||
const result = valueSchema.parse(raw, `${path}.${key}`);
|
||||
if (result.ok) output[key] = result.value;
|
||||
else errors.push(...result.errors);
|
||||
}
|
||||
return errors.length ? { ok: false, errors } : { ok: true, value: output };
|
||||
},
|
||||
};
|
||||
}
|
||||
@@ -0,0 +1,80 @@
|
||||
export type JsonPrimitive = string | number | boolean | null;
|
||||
export type JsonValue = JsonPrimitive | JsonValue[] | { [key: string]: JsonValue };
|
||||
export type JsonObject = { [key: string]: JsonValue };
|
||||
|
||||
export interface ResponsiveValue<T extends JsonValue = JsonValue> {
|
||||
base: T;
|
||||
overrides?: Record<string, T>;
|
||||
states?: Partial<Record<"hover" | "focus" | "active" | "dark", T>>;
|
||||
}
|
||||
|
||||
export type BlockStyles = Record<string, ResponsiveValue>;
|
||||
|
||||
export interface BlockNode<P extends JsonObject = JsonObject, S extends BlockStyles = BlockStyles> {
|
||||
id: string;
|
||||
type: string;
|
||||
version: number;
|
||||
props: P;
|
||||
styles: S;
|
||||
slots: Record<string, BlockNode[]>;
|
||||
}
|
||||
|
||||
export interface DocumentTheme {
|
||||
tokens: Record<string, string | number>;
|
||||
darkTokens?: Record<string, string | number>;
|
||||
}
|
||||
|
||||
export interface BlockDocument {
|
||||
schemaVersion: number;
|
||||
kind: string;
|
||||
meta: JsonObject;
|
||||
theme: DocumentTheme;
|
||||
root: BlockNode;
|
||||
}
|
||||
|
||||
export type Severity = "error" | "warning" | "info";
|
||||
|
||||
export interface Diagnostic {
|
||||
code: string;
|
||||
message: string;
|
||||
severity: Severity;
|
||||
nodeId?: string;
|
||||
path?: string;
|
||||
}
|
||||
|
||||
export type Result<T, E = Diagnostic[]> = { ok: true; value: T } | { ok: false; errors: E };
|
||||
|
||||
export interface SelectionState {
|
||||
primary: string | null;
|
||||
ordered: string[];
|
||||
}
|
||||
|
||||
export interface BlockLocation {
|
||||
parentId: string;
|
||||
slot: string;
|
||||
index: number;
|
||||
}
|
||||
|
||||
export interface MoveIntent {
|
||||
nodeIds: string[];
|
||||
from: BlockLocation[];
|
||||
to: BlockLocation;
|
||||
}
|
||||
|
||||
export interface DocumentLimits {
|
||||
maxBytes: number;
|
||||
maxNodes: number;
|
||||
maxDepth: number;
|
||||
maxChildrenPerSlot: number;
|
||||
maxStringLength: number;
|
||||
maxOutputBytes: number;
|
||||
}
|
||||
|
||||
export const DEFAULT_LIMITS: DocumentLimits = {
|
||||
maxBytes: 1_000_000,
|
||||
maxNodes: 2_000,
|
||||
maxDepth: 32,
|
||||
maxChildrenPerSlot: 500,
|
||||
maxStringLength: 200_000,
|
||||
maxOutputBytes: 2_000_000,
|
||||
};
|
||||
Reference in new issue
Block a user