{"version":3,"sources":["../src/schemas/index.ts","../src/schemas/settings.ts","../src/schemas/primitives.ts","../src/schemas/tagger.ts","../src/examples/index.ts","../src/examples/env.ts","../src/examples/step.ts","../src/examples/trigger.ts","../src/trigger.ts","../src/walker.ts","../src/triggerVisible.ts","../src/translation.ts"],"sourcesContent":["import { zodToSchema } from '@walkeros/core/dev';\nimport { SettingsSchema } from './settings';\nimport { TaggerSchema } from './tagger';\n\n// Export primitives\nexport * from './primitives';\n\n// Export Zod schemas and types\nexport { SettingsSchema, type Settings } from './settings';\nexport { TaggerSchema, type TaggerConfig } from './tagger';\n\n// JSON Schema exports (for website PropertyTable and explorer RJSF)\nexport const settings = zodToSchema(SettingsSchema);\nexport const tagger = zodToSchema(TaggerSchema);\n","import { z } from '@walkeros/core/dev';\nimport {\n DataAttributePrefix,\n JavaScriptVarName,\n ScopeSelector,\n} from './primitives';\n\n/**\n * ELB Layer configuration schema\n * Note: Runtime type can be boolean | string | Elb.Layer\n */\nconst ElbLayerConfigSchema = z.union([\n z.boolean(),\n z.string(),\n z.any().describe('Elb.Layer array for async command queuing'),\n]);\n\n/**\n * Browser source settings schema\n */\nexport const SettingsSchema = z.object({\n prefix: DataAttributePrefix.default('data-elb').describe(\n 'Prefix for data attributes (default: data-elb)',\n ),\n\n scope: ScopeSelector.describe(\n 'DOM scope for event tracking (default: document)',\n ),\n\n pageview: z\n .boolean()\n .default(true)\n .describe('Enable automatic pageview tracking'),\n\n elb: JavaScriptVarName.default('elb').describe(\n 'Name for global elb function',\n ),\n\n name: z.string().describe('Custom name for source instance').optional(),\n\n elbLayer: ElbLayerConfigSchema.default('elbLayer').describe(\n 'Enable elbLayer for async command queuing (boolean, string, or Elb.Layer)',\n ),\n});\n\n// Note: We export the inferred type, but types/index.ts will override\n// specific fields with non-serializable types\nexport type Settings = z.infer;\n","import { z } from '@walkeros/core/dev';\n\n/**\n * Data attribute prefix\n * Used for DOM event tracking\n */\nexport const DataAttributePrefix = z\n .string()\n .min(1)\n .regex(/^[a-z][a-z0-9-]*$/, 'Must be lowercase kebab-case')\n .describe('Prefix for data attributes on DOM elements');\n\n/**\n * JavaScript variable name\n * Used for global function names\n */\nexport const JavaScriptVarName = z\n .string()\n .min(1)\n .regex(/^[a-zA-Z_$][a-zA-Z0-9_$]*$/, 'Must be a valid JavaScript identifier')\n .describe('JavaScript variable name');\n\n/**\n * DOM scope selector\n * Note: Runtime type is Element | Document (non-serializable)\n */\nexport const ScopeSelector = z\n .string()\n .describe('DOM scope for event tracking (CSS selector or \"document\")')\n .optional();\n","import { z } from '@walkeros/core/dev';\nimport { DataAttributePrefix } from './primitives';\n\n/**\n * Tagger configuration schema\n * Used for automatic data attribute generation\n */\nexport const TaggerSchema = z.object({\n prefix: DataAttributePrefix.default('data-elb').describe(\n 'Custom prefix for generated data attributes',\n ),\n});\n\nexport type TaggerConfig = z.infer;\n","export * as env from './env';\nexport * as step from './step';\nexport { createTrigger, trigger } from './trigger';\n","import type { Env } from '../types';\nimport type { Elb, Logger } from '@walkeros/core';\n\n/**\n * Example environment configurations for browser source\n *\n * These environments provide standardized mock structures for testing\n * browser event capture without requiring an actual DOM environment.\n */\n\n// Simple no-op function for mocking\nconst noop = () => {};\n\n// Create a properly typed elb/push/command function that returns a promise with PushResult\nconst createMockElbFn = (): Elb.Fn => {\n const fn = (() =>\n Promise.resolve({\n ok: true,\n })) as Elb.Fn;\n return fn;\n};\n\n// Simple no-op logger for demo purposes\nconst noopLogger: Logger.Instance = {\n error: noop,\n warn: noop,\n info: noop,\n debug: noop,\n throw: (message: string | Error) => {\n throw typeof message === 'string' ? new Error(message) : message;\n },\n json: noop,\n scope: () => noopLogger,\n};\n\n/**\n * Mock window object with common browser APIs\n */\nconst createMockWindow = () => ({\n addEventListener: noop,\n removeEventListener: noop,\n location: {\n href: 'https://example.com/page',\n pathname: '/page',\n search: '?query=test',\n hash: '#section',\n host: 'example.com',\n hostname: 'example.com',\n origin: 'https://example.com',\n protocol: 'https:',\n },\n document: {},\n navigator: {\n language: 'en-US',\n userAgent: 'Mozilla/5.0 (Test)',\n },\n screen: {\n width: 1920,\n height: 1080,\n },\n innerWidth: 1920,\n innerHeight: 1080,\n pageXOffset: 0,\n pageYOffset: 0,\n scrollX: 0,\n scrollY: 0,\n});\n\n/**\n * Mock document object with DOM methods\n */\nconst createMockDocument = () => ({\n addEventListener: noop,\n removeEventListener: noop,\n querySelector: noop,\n querySelectorAll: () => [],\n getElementById: noop,\n getElementsByClassName: () => [],\n getElementsByTagName: () => [],\n createElement: () => ({\n setAttribute: noop,\n getAttribute: noop,\n addEventListener: noop,\n removeEventListener: noop,\n }),\n body: {\n appendChild: noop,\n removeChild: noop,\n },\n documentElement: {\n scrollTop: 0,\n scrollLeft: 0,\n },\n readyState: 'complete',\n title: 'Test Page',\n referrer: '',\n cookie: '',\n});\n\n/**\n * Standard mock environment for testing browser source\n *\n * Use this for testing event capture, DOM interactions, and pageview tracking\n * without requiring a real browser environment.\n */\nexport const push: Env = {\n get push() {\n return createMockElbFn();\n },\n get command() {\n return createMockElbFn();\n },\n get elb() {\n return createMockElbFn();\n },\n get window() {\n return createMockWindow() as unknown as typeof window;\n },\n get document() {\n return createMockDocument() as unknown as typeof document;\n },\n logger: noopLogger,\n};\n","import type { Flow } from '@walkeros/core';\n\nexport const pageView: Flow.StepExample = {\n title: 'Page view',\n description:\n 'A page load trigger captures the current URL, title, and referrer as a walker page view event.',\n trigger: {\n type: 'load',\n options: {\n url: 'https://example.com/docs',\n title: 'Documentation',\n referrer: 'https://example.com/',\n },\n },\n in: '',\n out: [\n [\n 'elb',\n {\n name: 'page view',\n data: {\n domain: 'example.com',\n title: 'Documentation',\n referrer: 'https://example.com/',\n id: '/docs',\n },\n context: {},\n globals: {},\n nested: undefined,\n custom: undefined,\n trigger: 'load',\n source: {\n type: 'browser',\n platform: 'web',\n url: 'https://example.com/docs',\n referrer: 'https://example.com/',\n },\n },\n ],\n ],\n};\n\nexport const clickEvent: Flow.StepExample = {\n title: 'Click event',\n description:\n 'A button click with walker data attributes is captured as an entity action event with the mapped label data.',\n trigger: { type: 'click', options: 'button' },\n in: '',\n out: [\n [\n 'elb',\n {\n name: 'cta click',\n entity: 'cta',\n action: 'click',\n data: { label: 'Sign Up' },\n context: {},\n globals: {},\n nested: [],\n source: {\n type: 'browser',\n platform: 'web',\n url: 'https://example.com/',\n referrer: '',\n },\n trigger: 'click',\n },\n ],\n ],\n};\n\nexport const submitEvent: Flow.StepExample = {\n title: 'Submit event',\n description:\n 'A form submit with walker data attributes produces a signup complete event carrying the selected plan.',\n trigger: { type: 'submit', options: 'form' },\n in: '
',\n out: [\n [\n 'elb',\n {\n name: 'signup complete',\n entity: 'signup',\n action: 'complete',\n data: { plan: 'premium' },\n context: {},\n globals: {},\n nested: [],\n source: {\n type: 'browser',\n platform: 'web',\n url: 'https://example.com/',\n referrer: '',\n },\n trigger: 'submit',\n },\n ],\n ],\n};\n\nexport const impressionEvent: Flow.StepExample = {\n title: 'Impression event',\n description:\n 'An intersection observer impression on a div with walker attributes emits a banner view event.',\n trigger: { type: 'impression', options: 'div' },\n in: '
',\n out: [\n [\n 'elb',\n {\n name: 'banner view',\n entity: 'banner',\n action: 'view',\n data: { type: 'promotional', position: 'sidebar' },\n context: {},\n globals: {},\n nested: [],\n source: {\n type: 'browser',\n platform: 'web',\n url: 'https://example.com/',\n referrer: '',\n },\n trigger: 'impression',\n },\n ],\n ],\n};\n\nexport const nestedEntities: Flow.StepExample = {\n title: 'Nested entities',\n description:\n 'A page load produces a page view plus a product view whose nested size entity is captured on the product event.',\n trigger: { type: 'load' },\n in: '
',\n out: [\n [\n 'elb',\n {\n name: 'page view',\n data: {\n domain: 'example.com',\n title: '',\n referrer: '',\n id: '/',\n },\n context: {},\n globals: {},\n nested: undefined,\n custom: undefined,\n trigger: 'load',\n source: {\n type: 'browser',\n platform: 'web',\n url: 'https://example.com/',\n referrer: '',\n },\n },\n ],\n [\n 'elb',\n {\n name: 'product view',\n entity: 'product',\n action: 'view',\n data: { id: 'SKU-42', name: 'Sneakers' },\n context: {},\n globals: {},\n nested: [\n {\n entity: 'size',\n data: { selected: 'large', inStock: true },\n context: {},\n nested: [],\n },\n ],\n source: {\n type: 'browser',\n platform: 'web',\n url: 'https://example.com/',\n referrer: '',\n },\n trigger: 'load',\n },\n ],\n ],\n};\n\nexport const dataAttributeTypes: Flow.StepExample = {\n title: 'Data attribute types',\n description:\n 'Walker data attributes parse scalar, boolean, and array values into typed fields on the emitted event.',\n trigger: { type: 'click', options: 'div' },\n in: '
',\n out: [\n [\n 'elb',\n {\n name: 'product select',\n entity: 'product',\n action: 'select',\n data: { price: 99.99, available: true, colors: ['red', 'blue'] },\n context: {},\n globals: {},\n nested: [],\n source: {\n type: 'browser',\n platform: 'web',\n url: 'https://example.com/',\n referrer: '',\n },\n trigger: 'click',\n },\n ],\n ],\n};\n\nexport const contextAndGlobals: Flow.StepExample = {\n title: 'Context and globals',\n description:\n 'Walker context and globals attributes attach ambient metadata to events emitted by the browser source.',\n trigger: { type: 'click', options: '[data-elb=\"cta\"]' },\n in: '
Try Now
',\n out: [\n [\n 'elb',\n {\n name: 'cta signup',\n entity: 'cta',\n action: 'signup',\n data: { label: 'Try Now' },\n context: { test: ['engagement_flow', 0] },\n globals: { language: 'en', plan: 'premium' },\n nested: [],\n source: {\n type: 'browser',\n platform: 'web',\n url: 'https://example.com/',\n referrer: '',\n },\n trigger: 'click',\n },\n ],\n ],\n};\n","import type { Trigger, Collector } from '@walkeros/core';\nimport { startFlow } from '@walkeros/collector';\nimport { handleTrigger } from '../trigger';\nimport type { Context } from '../types';\n\ntype BrowserTriggerType =\n | 'load'\n | 'click'\n | 'submit'\n | 'hover'\n | 'scroll'\n | 'impression'\n | 'visible'\n | 'wait'\n | 'pulse';\n\ninterface LoadOptions {\n url?: string;\n title?: string;\n referrer?: string;\n}\n\ninterface BrowserInput {\n trigger: string;\n url?: string;\n title?: string;\n referrer?: string;\n element?: string;\n attributes?: Record;\n children?: Record[];\n context?: Record;\n globals?: Record;\n}\n\n/**\n * Browser source createTrigger.\n *\n * Injects HTML into the DOM, lazily starts the flow, then calls\n * handleTrigger directly — the same convergence point as production.\n * For load triggers, the source's DOM scan during startFlow handles\n * event capture automatically.\n *\n * @example\n * const { trigger } = await createTrigger(config);\n * await trigger('click', 'button')('');\n *\n * @example\n * // Impression trigger — handleTrigger reads data-elbaction directly\n * await trigger('impression', '[data-elb=\"promo\"]')('
Ad
');\n */\nconst createTrigger: Trigger.CreateFn = async (\n config: Collector.InitConfig,\n options?: unknown,\n) => {\n const sourceId = (options as { sourceId?: string } | undefined)?.sourceId || 'browser';\n let flow: Trigger.FlowHandle | undefined;\n const doc = document;\n const win = window;\n\n const trigger: Trigger.Fn =\n (type?: string, opts?: unknown) => async (content: string) => {\n // 1. Set up environment for load triggers (URL, title, referrer)\n if (type === 'load' || !type) {\n const loadOpts =\n typeof opts === 'object' && opts !== null\n ? (opts as LoadOptions)\n : {};\n if (loadOpts.url) {\n const urlObj = new URL(loadOpts.url);\n win.history.replaceState({}, '', urlObj.pathname);\n }\n if (loadOpts.title) doc.title = loadOpts.title;\n if (loadOpts.referrer) {\n Object.defineProperty(doc, 'referrer', {\n value: loadOpts.referrer,\n configurable: true,\n });\n }\n }\n\n // 2. Inject HTML content into DOM — replaces to create fresh state\n if (content) doc.body.innerHTML = content;\n\n // 3. Lazy startFlow — first call initializes the flow\n // Default run: true so sources scan the DOM and set up listeners\n if (!flow) {\n const result = await startFlow({ ...config, run: config.run ?? true });\n flow = { collector: result.collector, elb: result.elb };\n }\n\n // 4. For load triggers, source already scanned DOM during init — done\n if (!type || type === 'load') return;\n\n // 5. Find target element\n const selector = typeof opts === 'string' ? opts : undefined;\n const target = selector ? doc.querySelector(selector) : null;\n\n if (!target) {\n console.warn(`Trigger: element not found for selector \"${selector}\"`);\n return;\n }\n\n // 6. Build context from live source instance\n const source = flow.collector.sources[sourceId];\n if (!source) {\n console.warn(`Trigger: source \"${sourceId}\" not found in collector`);\n return;\n }\n\n const context: Context = {\n elb: flow.elb,\n settings: source.config.settings as Context['settings'],\n };\n\n // 7. Call handleTrigger directly — same convergence point as production\n await handleTrigger(context, target, type);\n };\n\n return {\n get flow() {\n return flow;\n },\n trigger,\n };\n};\n\n/**\n * Browser source trigger (legacy).\n * Converts step example `in` data into DOM elements and dispatches events.\n */\nconst trigger = (\n input: unknown,\n env: Record,\n): void | (() => void) => {\n if (!input || typeof input !== 'object') return;\n const data = input as BrowserInput;\n const doc = env.document as Document;\n const win = env.window as Window & typeof globalThis;\n\n const injectDOM = () => {\n if (!data.attributes) return;\n\n const tag = data.element?.match(/^(\\w+)/)?.[1] || 'div';\n const el = doc.createElement(tag);\n\n for (const [key, value] of Object.entries(data.attributes)) {\n el.setAttribute(key, value);\n }\n\n if (data.children) {\n for (const childAttrs of data.children) {\n const child = doc.createElement('div');\n for (const [key, value] of Object.entries(childAttrs)) {\n child.setAttribute(key, value);\n }\n el.appendChild(child);\n }\n }\n\n doc.body.appendChild(el);\n return el;\n };\n\n const isLoad = !data.trigger || data.trigger === 'load';\n\n if (isLoad) {\n if (data.url) {\n const urlObj = new URL(data.url);\n win.history.replaceState({}, '', urlObj.pathname);\n }\n if (data.title) {\n doc.title = data.title;\n }\n if (data.referrer) {\n Object.defineProperty(doc, 'referrer', { value: data.referrer });\n }\n injectDOM();\n return;\n }\n\n // Interactive triggers: inject DOM and dispatch event AFTER source init\n return () => {\n const el = injectDOM();\n if (!el) return;\n\n switch (data.trigger) {\n case 'click':\n el.dispatchEvent(new MouseEvent('click', { bubbles: true }));\n break;\n case 'submit':\n el.dispatchEvent(new Event('submit', { bubbles: true }));\n break;\n case 'hover':\n el.dispatchEvent(new MouseEvent('mouseenter', { bubbles: true }));\n break;\n case 'scroll':\n win.dispatchEvent(new Event('scroll'));\n break;\n }\n };\n};\n\nexport { createTrigger, trigger };\n","import type { WalkerOS, Collector } from '@walkeros/core';\nimport type { Walker } from '@walkeros/web-core';\nimport type { Scope, Settings, Context } from './types';\nimport { throttle, tryCatch } from '@walkeros/core';\nimport { Const, onApply } from '@walkeros/collector';\nimport { elb as elbOrg, getAttribute } from '@walkeros/web-core';\nimport {\n getElbAttributeName,\n getEvents,\n getPageViewData,\n getTriggerActions,\n queryAllComposed,\n} from './walker';\nimport {\n initVisibilityTracking,\n triggerVisible,\n destroyVisibilityTracking,\n} from './triggerVisible';\nimport { translateToCoreCollector } from './translation';\n\n// Module-level state is intentional. The walker.js browser source is\n// single-instance per window: one elb queue, one set of DOM listeners,\n// one scroll tracker. The state below is shared across all callers\n// because there is only ever one caller. If multi-instance ever becomes\n// a real requirement (e.g., micro-frontends with isolated walker queues),\n// refactor this into a per-instance closure returned by createSource()\n// and route every trigger function through that closure.\nlet scrollElements: Walker.ScrollElements = [];\nlet scrollListener: EventListenerOrEventListenerObject | undefined;\nlet globalAbortController: AbortController | undefined;\nlet pulseIntervals: ReturnType[] = [];\nlet waitTimeouts: ReturnType[] = [];\n\n// Listeners registered before initTriggers (or after destroyTriggers) would\n// otherwise miss the AbortController and never be removed on teardown. This\n// helper guarantees every listener gets a signal from the current session's\n// controller, lazily creating one when needed.\nfunction ensureAbortController(): AbortController {\n if (!globalAbortController) {\n globalAbortController = new AbortController();\n }\n return globalAbortController;\n}\n\n// Reset function for testing\nexport function resetScrollListener() {\n scrollListener = undefined;\n scrollElements = [];\n}\n\nexport const createElb: (customLayer?: unknown) => unknown = (customLayer?) => {\n return (\n customLayer\n ? function () {\n (customLayer as unknown[]).push(arguments);\n }\n : elbOrg\n ) as unknown;\n};\n\nexport const Triggers: { [key: string]: Walker.Trigger } = {\n Click: 'click',\n Custom: 'custom',\n Hover: 'hover',\n Load: 'load',\n Pulse: 'pulse',\n Scroll: 'scroll',\n Submit: 'submit',\n Impression: 'impression',\n Visible: 'visible',\n Wait: 'wait',\n} as const;\n\nexport async function ready(\n fn: (context: Context, settings: Settings) => void,\n context: Context,\n settings: Settings,\n): Promise {\n const readyFn = () => {\n fn(context, settings);\n };\n\n const scope = settings.scope;\n if (!scope) {\n readyFn();\n return;\n }\n const doc = (scope as Element).ownerDocument || (scope as Document);\n if (doc.readyState !== 'loading') {\n readyFn();\n } else {\n doc.addEventListener('DOMContentLoaded', readyFn);\n }\n}\n\n// Called once during source initialization to setup global listeners\nexport function initTriggers(context: Context, settings: Settings) {\n if (!settings.scope) return; // Skip if no scope available\n const requiredSettings = settings as Required;\n initGlobalTrigger(context, requiredSettings);\n}\n\n// Called on each walker run to process load triggers\nexport function processLoadTriggers(context: Context, settings: Settings) {\n if (!settings.scope) return; // Skip if no scope available\n const requiredSettings = settings as Required;\n initScopeTrigger(context, requiredSettings);\n}\n\nexport function initGlobalTrigger(context: Context, settings: Settings): void {\n const scope = settings.scope;\n\n if (!scope) return;\n\n // Abort any previously registered listeners before re-registering\n if (globalAbortController) globalAbortController.abort();\n globalAbortController = new AbortController();\n const { signal } = globalAbortController;\n\n scope.addEventListener(\n 'click',\n tryCatch(function (this: Scope, ev: unknown) {\n triggerClick.call(this, context, ev as MouseEvent);\n }) as EventListener,\n { signal },\n );\n scope.addEventListener(\n 'submit',\n tryCatch(function (this: Scope, ev: unknown) {\n triggerSubmit.call(this, context, ev as SubmitEvent);\n }) as EventListener,\n { signal },\n );\n}\n\n// Removes all listeners registered via the global AbortController and\n// resets module-level scroll state. Safe to call before any init.\nexport function destroyTriggers(settings: Settings): void {\n if (globalAbortController) {\n globalAbortController.abort();\n globalAbortController = undefined;\n }\n scrollListener = undefined;\n scrollElements = [];\n pulseIntervals.forEach((id) => clearInterval(id));\n pulseIntervals = [];\n waitTimeouts.forEach((id) => clearTimeout(id));\n waitTimeouts = [];\n}\n\nexport function initScopeTrigger(context: Context, settings: Settings) {\n const elem = settings.scope;\n\n // Reset all scroll events @TODO check if it's right here\n scrollElements = [];\n\n // Clean up any existing visibility tracking to prevent observer accumulation\n const scope = elem;\n if (!scope) return;\n destroyVisibilityTracking(scope);\n // Initialize visibility tracking for this scope\n initVisibilityTracking(scope, 1000);\n\n // default data-elbaction\n const selectorAction = getElbAttributeName(\n settings.prefix,\n Const.Commands.Action,\n false,\n );\n const doc = (scope as Element).ownerDocument || (scope as Document);\n if (scope !== doc) {\n // Handle the elements action(s), too\n handleActionElem(context, scope as HTMLElement, selectorAction, settings);\n }\n\n // Handle all children action(s)\n queryAllComposed(scope, `[${selectorAction}]`, (elem) => {\n handleActionElem(context, elem as HTMLElement, selectorAction, settings);\n });\n\n if (scrollElements.length) scroll(context, scope, settings);\n}\n\nexport async function handleTrigger(\n context: Context,\n element: Element,\n trigger: string,\n // @TODO add triggerParams to filter for specific trigger\n): Promise {\n const events = getEvents(element, trigger, context.settings.prefix);\n return Promise.all(\n events.map((event: Walker.Event) =>\n translateToCoreCollector(context, {\n name: `${event.entity} ${event.action}`,\n ...event,\n trigger,\n }),\n ),\n );\n}\n\nfunction handleActionElem(\n context: Context,\n elem: HTMLElement,\n selectorAction: string,\n settings: Settings,\n) {\n const actionAttr = getAttribute(elem, selectorAction);\n\n if (!actionAttr) return;\n\n // TriggersActionGroups ([trigger: string]: TriggerActions)\n Object.values(getTriggerActions(actionAttr)).forEach((triggerActions) =>\n // TriggerActions (Array)\n triggerActions.forEach((triggerAction: Walker.TriggerActions[0]) => {\n // TriggerAction ({ trigger, triggerParams, action, actionParams })\n switch (triggerAction.trigger) {\n case Triggers.Hover:\n triggerHover(context, elem);\n break;\n case Triggers.Load:\n triggerLoad(context, elem);\n break;\n case Triggers.Pulse:\n triggerPulse(context, elem, triggerAction.triggerParams);\n break;\n case Triggers.Scroll:\n triggerScroll(elem, triggerAction.triggerParams);\n break;\n case Triggers.Impression:\n triggerVisible(context, elem);\n break;\n case Triggers.Visible:\n triggerVisible(context, elem, { multiple: true });\n break;\n case Triggers.Wait:\n triggerWait(context, elem, triggerAction.triggerParams);\n break;\n }\n }),\n );\n}\n\n/**\n * Get the actual event target, piercing open shadow DOM boundaries.\n * Uses composedPath() to find the real target inside shadow roots.\n * For closed shadow DOM, falls back to the host element (by design).\n */\nfunction getComposedTarget(ev: Event): Element | undefined {\n const path = ev.composedPath?.();\n const target = path?.length ? path[0] : ev.target;\n if (!target || typeof target !== 'object' || !('tagName' in target))\n return undefined;\n return target as Element;\n}\n\nfunction triggerClick(context: Context, ev: MouseEvent) {\n const target = getComposedTarget(ev);\n if (target) handleTrigger(context, target, Triggers.Click);\n}\n\nfunction triggerHover(context: Context, elem: HTMLElement) {\n elem.addEventListener(\n 'mouseenter',\n tryCatch(function (this: Document, ev: MouseEvent) {\n const target = getComposedTarget(ev);\n if (target) handleTrigger(context, target, Triggers.Hover);\n }),\n { signal: ensureAbortController().signal },\n );\n}\n\nfunction triggerLoad(context: Context, elem: HTMLElement) {\n handleTrigger(context, elem, Triggers.Load);\n}\n\nfunction triggerPulse(\n context: Context,\n elem: HTMLElement,\n triggerParams: string = '',\n) {\n const doc = elem.ownerDocument;\n const intervalId = setInterval(\n () => {\n // Only trigger when tab is active\n if (!doc.hidden) handleTrigger(context, elem, Triggers.Pulse);\n },\n parseInt(triggerParams || '') || 15000,\n );\n pulseIntervals.push(intervalId);\n}\n\nfunction triggerScroll(elem: HTMLElement, triggerParams: string = '') {\n // Scroll depth in percent, default 50%\n const depth = parseInt(triggerParams || '') || 50;\n\n // Ignore invalid parameters\n if (depth < 0 || depth > 100) return;\n\n scrollElements.push([elem, depth]);\n}\n\nfunction triggerSubmit(context: Context, ev: SubmitEvent) {\n const target = getComposedTarget(ev);\n if (target) handleTrigger(context, target, Triggers.Submit);\n}\n\nfunction triggerWait(\n context: Context,\n elem: HTMLElement,\n triggerParams: string = '',\n) {\n const timeoutId = setTimeout(\n () => handleTrigger(context, elem, Triggers.Wait),\n parseInt(triggerParams || '') || 15000,\n );\n waitTimeouts.push(timeoutId);\n}\n\nfunction scroll(context: Context, scope: Scope, settings: Settings) {\n const doc = (scope as Element).ownerDocument || (scope as Document);\n const win = doc.defaultView!;\n const scrolling = (\n scrollElements: Walker.ScrollElements,\n context: Context,\n ) => {\n return scrollElements.filter(([element, depth]: [Element, number]) => {\n // Distance from top to the bottom of the visible screen\n const windowBottom = win.scrollY + win.innerHeight;\n // Distance from top to the elements relevant content\n const elemTop = (element as HTMLElement).offsetTop;\n\n // Skip calculations if not in viewport yet\n if (windowBottom < elemTop) return true;\n\n // Height of the elements box as 100 percent base\n const elemHeight = element.clientHeight;\n // Distance from top to the elements bottom\n const elemBottom = elemTop + elemHeight;\n // Height of the non-visible pixels below visible screen\n const hidden = elemBottom - windowBottom;\n // Visible percentage of the element\n const scrollDepth = (1 - hidden / (elemHeight || 1)) * 100;\n\n // Check if the elements visibility skipped the required border\n if (scrollDepth >= depth) {\n // Enough scrolling, it's time\n handleTrigger(context, element, Triggers.Scroll);\n\n // Remove the element from scrollEvents\n return false;\n }\n\n // Keep observing the element\n return true;\n });\n };\n\n // Don't add unnecessary scroll listeners\n if (!scrollListener) {\n scrollListener = throttle(function () {\n scrollElements = scrolling.call(scope, scrollElements, context);\n });\n\n scope.addEventListener('scroll', scrollListener, {\n signal: ensureAbortController().signal,\n });\n }\n}\n","import type { WalkerOS } from '@walkeros/core';\nimport type { Walker } from '@walkeros/web-core';\nimport type { Scope } from './types';\nimport { assign, castValue, isArray, trim } from '@walkeros/core';\nimport { Const } from '@walkeros/collector';\nimport { getAttribute } from '@walkeros/web-core';\n\nexport function getElbAttributeName(\n prefix: string,\n name?: string,\n isProperty = true,\n): string {\n // separate dynamic properties from walker Const.Commands\n const separator = isProperty ? '-' : '';\n name = name != undefined ? separator + name : '';\n return prefix + name;\n}\n\nexport function getElbValues(\n prefix: string,\n element: Element,\n name: string,\n isProperty = true,\n): WalkerOS.Properties {\n const attributeValue =\n getAttribute(element, getElbAttributeName(prefix, name, isProperty)) || '';\n\n const elbValues = splitAttribute(attributeValue).reduce((values, str) => {\n let [key, val]: Walker.KeyVal = splitKeyVal(str);\n\n if (!key) return values;\n\n // Handle keys without value\n if (!val) {\n // Manually remove the : from key on empty values\n if (key.endsWith(':')) key = key.slice(0, -1);\n val = '';\n }\n\n // Dynamic values\n if (val.startsWith('#')) {\n val = val.slice(1); // Remove # symbol\n try {\n // Read property value from element\n let dynamicValue = (element as Element)[val as keyof Element];\n if (!dynamicValue && val === 'selected') {\n // Try to read selected value with chance of error\n dynamicValue = (element as HTMLSelectElement).options[\n (element as HTMLSelectElement).selectedIndex\n ].text;\n }\n\n val = String(dynamicValue);\n } catch (error) {\n val = '';\n }\n }\n\n if (key.endsWith('[]')) {\n key = key.slice(0, -2); // Remove [] symbol\n if (!isArray(values[key])) values[key] = [];\n (values[key] as WalkerOS.PropertyType[]).push(castValue(val));\n } else {\n values[key] = castValue(val);\n }\n\n return values;\n }, {} as WalkerOS.Properties);\n\n return elbValues;\n}\n\nexport function getAllEvents(\n scope: Scope,\n prefix: string = Const.Commands.Prefix,\n): Walker.Events {\n const actualScope = scope;\n if (!actualScope) return [];\n let events: Walker.Events = [];\n const action = Const.Commands.Action;\n const actionSelector = `[${getElbAttributeName(prefix, action, false)}]`;\n\n const processElementEvents = (elem: Element) => {\n Object.keys(getElbValues(prefix, elem, action, false)).forEach(\n (trigger) => {\n events = events.concat(getEvents(elem, trigger, prefix));\n },\n );\n };\n\n // Check if the scope element itself has action attributes\n const doc =\n (actualScope as Element).ownerDocument || (actualScope as Document);\n if (\n actualScope !== doc &&\n (actualScope as Element).matches?.(actionSelector)\n ) {\n processElementEvents(actualScope as Element);\n }\n\n queryAllComposed(actualScope, actionSelector, processElementEvents);\n\n return events;\n}\n\nexport function getEvents(\n target: Element,\n trigger: string,\n prefix: string = Const.Commands.Prefix,\n): Walker.Events {\n const events: Walker.Events = [];\n\n // Check for actions and get entity collection strategy\n const { actions, nearestOnly } = resolveAttributes(prefix, target, trigger);\n\n // Stop if there's no valid action combo\n if (!actions.length) return events;\n\n actions.forEach((triggerAction) => {\n const filter = splitAttribute(triggerAction.actionParams || '', ',').reduce(\n (filter, param) => {\n filter[trim(param)] = true;\n return filter;\n },\n {} as Walker.Filter,\n );\n\n // Get entities - using nearestOnly flag to determine collection strategy\n const entities = getEntities(prefix, target, filter, nearestOnly);\n\n // Use page as default entity if no one was set\n if (!entities.length) {\n const entity = 'page';\n // Only use explicit page properties and ignore generic properties\n const entitySelector = `[${getElbAttributeName(prefix, entity)}]`;\n\n // Get matching properties from the element and its parents\n const [data, context] = getThisAndParentProperties(\n target,\n entitySelector,\n prefix,\n entity,\n );\n\n entities.push({\n entity, // page\n data, // Consider only upper data\n nested: [], // Skip nested in this faked page case\n context,\n });\n }\n\n // Return a list of full events\n entities.forEach((entity) => {\n events.push({\n entity: entity.entity,\n action: triggerAction.action,\n data: entity.data,\n trigger,\n context: entity.context,\n nested: entity.nested ?? [],\n });\n });\n });\n\n return events;\n}\n\nexport function getGlobals(\n prefix: string = Const.Commands.Prefix,\n scope?: Scope,\n): WalkerOS.Properties {\n if (!scope) return {};\n const globalsName = getElbAttributeName(\n prefix,\n Const.Commands.Globals,\n false,\n );\n const globalSelector = `[${globalsName}]`;\n let values = {};\n\n queryAll(scope, globalSelector, (element) => {\n values = assign(\n values,\n getElbValues(prefix, element, Const.Commands.Globals, false),\n );\n });\n\n return values;\n}\n\nexport function getPageViewData(\n prefix: string,\n scope: Scope,\n): [WalkerOS.Properties, WalkerOS.OrderedProperties] {\n // static page view\n const doc = (scope as Element).ownerDocument || (scope as Document);\n const win = doc.defaultView!;\n const loc = win.location;\n const page = 'page';\n const scopeElement =\n 'body' in scope ? (scope as Document).body : (scope as Element);\n const [data, context] = getThisAndParentProperties(\n scopeElement,\n `[${getElbAttributeName(prefix, page)}]`,\n prefix,\n page,\n );\n data.domain = loc.hostname;\n data.title = doc.title;\n data.referrer = doc.referrer;\n\n if (loc.search) data.search = loc.search;\n if (loc.hash) data.hash = loc.hash;\n\n // @TODO get all nested entities\n return [data, context];\n}\n\nexport function getTriggerActions(str: string): Walker.TriggersActionGroups {\n const values: Walker.TriggersActionGroups = {};\n\n const attributes = splitAttribute(str);\n\n attributes.forEach((str) => {\n const [triggerAttr, actionAttr] = splitKeyVal(str);\n const [trigger, triggerParams] = parseAttribute(triggerAttr);\n\n if (!trigger) return;\n\n let [action, actionParams] = parseAttribute(actionAttr || '');\n\n // Shortcut if trigger and action are the same (click:click)\n action = action || trigger;\n\n if (!values[trigger]) values[trigger] = [];\n\n values[trigger].push({ trigger, triggerParams, action, actionParams });\n });\n\n return values;\n}\n\nexport function getEntities(\n prefix: string,\n target: Element,\n filter?: Walker.Filter,\n nearestOnly = false,\n): WalkerOS.Entities {\n const entities: WalkerOS.Entities = [];\n let element = target as Node['parentElement'];\n\n // Unset empty filter object\n filter = Object.keys(filter || {}).length !== 0 ? filter : undefined;\n\n while (element) {\n const entity = getEntity(prefix, element, target, filter);\n if (entity) {\n entities.push(entity);\n if (nearestOnly) break; // Stop after first entity for data-elbaction\n }\n\n element = getParent(prefix, element);\n }\n\n return entities;\n}\n\nfunction getEntity(\n prefix: string,\n element: Element,\n origin?: Element,\n filter?: Walker.Filter,\n): WalkerOS.Entity | null {\n const entity = getAttribute(element, getElbAttributeName(prefix));\n\n // It's not a (valid) entity element or should be filtered\n if (!entity || (filter && !filter[entity])) return null;\n\n const scopeElems = [element]; // All related elements\n const dataSelector = `[${getElbAttributeName(\n prefix,\n entity,\n )}],[${getElbAttributeName(prefix, '')}]`; // [data-elb-entity,data-elb-]\n const linkName = getElbAttributeName(prefix, Const.Commands.Link, false); // data-elblink\n\n let data: WalkerOS.Properties = {};\n const nested: WalkerOS.Entities = [];\n const [parentData, context] = getThisAndParentProperties(\n origin || element,\n dataSelector,\n prefix,\n entity,\n true, // collect scoped generic (data-elb_) for real entities\n );\n\n // Add linked elements (data-elblink)\n queryAllComposed(element, `[${linkName}]`, (link) => {\n const [linkId, linkState]: Walker.KeyVal = splitKeyVal(\n getAttribute(link, linkName),\n );\n\n // Get all linked child elements if link is a parent\n // Note: Searches entire document including shadow roots.\n // Acceptable because link-parent usage is rare in practice.\n if (linkState === 'parent')\n queryAllComposed(\n element.ownerDocument.body,\n `[${linkName}=\"${linkId}:child\"]`,\n (wormhole) => {\n scopeElems.push(wormhole);\n\n // A linked child can also be an entity\n const nestedEntity = getEntity(prefix, wormhole);\n if (nestedEntity) nested.push(nestedEntity);\n },\n );\n });\n\n // Get all property elements including linked elements\n const propertyElems: Array = [];\n scopeElems.forEach((elem) => {\n // Also check for property on same level\n if (elem.matches(dataSelector)) propertyElems.push(elem);\n\n queryAllComposed(elem, dataSelector, (elem) => propertyElems.push(elem));\n });\n\n // Get properties\n let genericData: WalkerOS.Properties = {};\n propertyElems.forEach((child) => {\n // Eventually override closer properties\n genericData = assign(genericData, getElbValues(prefix, child, ''));\n data = assign(data, getElbValues(prefix, child, entity));\n });\n\n // Merge properties with the hierarchy generic > data > parent\n data = assign(assign(genericData, data), parentData);\n\n // Get nested entities\n scopeElems.forEach((elem) => {\n queryAllComposed(\n elem,\n `[${getElbAttributeName(prefix)}]`,\n (nestedEntityElement) => {\n const nestedEntity = getEntity(prefix, nestedEntityElement);\n if (nestedEntity) nested.push(nestedEntity);\n },\n );\n });\n\n return { entity, data, context, nested };\n}\n\nfunction getParent(prefix: string, elem: HTMLElement): HTMLElement | null {\n const linkName = getElbAttributeName(prefix, Const.Commands.Link, false); // data-elblink\n\n // Link\n if (elem.matches(`[${linkName}]`)) {\n const [linkId, linkState]: Walker.KeyVal = splitKeyVal(\n getAttribute(elem, linkName),\n );\n if (linkState === 'child') {\n // Link-parent lookup does not cross shadow boundaries.\n // Uses simple queryAll (no shadow recursion) since this runs\n // during per-event entity traversal.\n const doc = elem.ownerDocument;\n let found: HTMLElement | null = null;\n queryAll(doc, `[${linkName}=\"${linkId}:parent\"]`, (el) => {\n if (!found) found = el as HTMLElement;\n });\n return found;\n }\n }\n\n // Shadow DOM traversal\n const win = elem.ownerDocument.defaultView!;\n if (\n !elem.parentElement &&\n elem.getRootNode &&\n elem.getRootNode() instanceof win.ShadowRoot\n ) {\n return (elem.getRootNode() as ShadowRoot).host as HTMLElement;\n }\n\n return elem.parentElement;\n}\n\nfunction getThisAndParentProperties(\n element: Element,\n entitySelector: string,\n prefix: string,\n type: string,\n collectScoped = false,\n): [data: WalkerOS.Properties, context: WalkerOS.OrderedProperties] {\n let data: WalkerOS.Properties = {};\n const context: WalkerOS.OrderedProperties = {};\n let parent = element as Node['parentElement'];\n const contextSelector = `[${getElbAttributeName(\n prefix,\n Const.Commands.Context,\n false,\n )}]`;\n const scopedName = Const.Commands.Scoped; // '_' -> data-elb_\n const scopedSelector = `[${getElbAttributeName(prefix, scopedName, false)}]`;\n\n // Get all bubbling-up properties with decreasing priority\n let contextI = 0; // Context counter\n while (parent) {\n // Scoped generic (data-elb_): same generic tier, bubble-up only.\n // The synthetic page entity ignores generics, so it skips scoped too.\n // Guard on scopedName so a falsy command constant degrades to \"no scoped\n // collection\" instead of an empty suffix that would match the bare prefix.\n if (collectScoped && scopedName && parent.matches(scopedSelector)) {\n data = assign(getElbValues(prefix, parent, scopedName, false), data);\n }\n\n // Properties\n if (parent.matches(entitySelector)) {\n // Get higher properties first\n data = assign(getElbValues(prefix, parent, ''), data); // Generic\n data = assign(getElbValues(prefix, parent, type), data); // Explicit\n }\n\n // Context\n if (parent.matches(contextSelector)) {\n Object.entries(\n getElbValues(prefix, parent, Const.Commands.Context, false),\n ).forEach(([key, val]) => {\n // Don't override context with same but higher key\n if (val && !context[key]) context[key] = [val, contextI];\n });\n\n // Increase context counter with each parent level\n ++contextI;\n }\n\n parent = getParent(prefix, parent);\n }\n\n return [data, context];\n}\n\nfunction queryAll(\n scope: Document | Element,\n selector: string,\n fn: (element: Element) => void,\n): void {\n scope.querySelectorAll(selector).forEach(fn);\n}\n\n// Shadow-aware version that recurses into open shadow roots.\n// Use for discovery (init) and entity-scoped queries (small subtrees).\n// Avoid for per-event document-scoped queries (e.g. getGlobals).\nexport function queryAllComposed(\n scope: Document | Element | ShadowRoot,\n selector: string,\n fn: (element: Element) => void,\n): void {\n scope.querySelectorAll(selector).forEach(fn);\n\n const doc = (scope as Element).ownerDocument || (scope as Document);\n const win = doc.defaultView!;\n if (scope instanceof win.Element && scope.shadowRoot) {\n queryAllComposed(scope.shadowRoot, selector, fn);\n }\n scope.querySelectorAll('*').forEach((el) => {\n if (el.shadowRoot) {\n queryAllComposed(el.shadowRoot, selector, fn);\n }\n });\n}\n\nfunction resolveAttributes(\n prefix: string,\n target: Element,\n trigger: string,\n): { actions: Walker.TriggerActions; nearestOnly: boolean } {\n let element = target as Node['parentElement'];\n\n while (element) {\n // Check for data-elbactions first (takes precedence)\n const multiAttribute = getAttribute(\n element,\n getElbAttributeName(prefix, Const.Commands.Actions, false),\n );\n\n if (multiAttribute) {\n const triggerActions = getTriggerActions(multiAttribute);\n if (triggerActions[trigger]) {\n return { actions: triggerActions[trigger], nearestOnly: false };\n }\n }\n\n // Check for data-elbaction (nearest entity only)\n const singleAttribute = getAttribute(\n element,\n getElbAttributeName(prefix, Const.Commands.Action, false),\n );\n\n if (singleAttribute) {\n const triggerActions = getTriggerActions(singleAttribute);\n // Action found on element or is not a click trigger\n if (triggerActions[trigger] || trigger !== 'click') {\n return { actions: triggerActions[trigger] || [], nearestOnly: true };\n }\n }\n\n element = getParent(prefix, element);\n }\n\n return { actions: [], nearestOnly: false };\n}\n\nfunction splitAttribute(str: string, separator = ';'): Walker.Attributes {\n const values: Walker.Attributes = [];\n\n if (!str) return values;\n\n const reg = new RegExp(`(?:[^${separator}']+|'[^']*')+`, 'ig');\n return str.match(reg) || [];\n}\n\nfunction splitKeyVal(str: string): Walker.KeyVal {\n const [key, value] = str.split(/:(.+)/, 2);\n return [trim(key), trim(value)];\n}\n\nfunction parseAttribute(str: string): Walker.KeyVal {\n // action(a, b, c)\n const [key, value] = str.split('(', 2);\n const param = value ? value.slice(0, -1) : ''; // Remove the )\n // key = 'action'\n // param = 'a, b, c'\n return [key, param];\n}\n","import type { WalkerOS } from '@walkeros/core';\nimport type { Settings, Context } from './types';\nimport { tryCatch } from '@walkeros/core';\nimport { isVisible } from '@walkeros/web-core';\nimport { handleTrigger, Triggers } from './trigger';\n\n// Cache for element size calculations to reduce DOM queries\nconst elementSizeCache = new WeakMap<\n HTMLElement,\n { isLarge: boolean; lastChecked: number }\n>();\n\n// Cache for basic visibility checks to reduce expensive isVisible() calls\nconst visibilityCache = new WeakMap<\n HTMLElement,\n { isVisible: boolean; lastChecked: number }\n>();\n\n// Module-level visibility state management (stateless source architecture)\ninterface VisibilityState {\n observer?: IntersectionObserver;\n timers: WeakMap;\n duration: number;\n elementConfigs?: WeakMap<\n HTMLElement,\n { multiple: boolean; blocked: boolean; context: Context; trigger: string }\n >;\n}\n\n// Module-level visibility state keyed by document/scope\nconst visibilityStates = new WeakMap();\n\n/**\n * Cached visibility check to reduce expensive isVisible() calls\n */\nfunction isElementVisible(element: HTMLElement): boolean {\n const now = Date.now();\n let cached = visibilityCache.get(element);\n\n // Cache visibility result for 500ms to balance accuracy with performance\n if (!cached || now - cached.lastChecked > 500) {\n const win = element.ownerDocument.defaultView!;\n const doc = element.ownerDocument;\n cached = {\n isVisible: isVisible(element, win, doc),\n lastChecked: now,\n };\n visibilityCache.set(element, cached);\n }\n\n return cached.isVisible;\n}\n\n/**\n * Element cleanup (unobserve + timer + cache cleanup)\n */\nexport function unobserveElement(\n scope: Document | Element,\n element: HTMLElement,\n): void {\n const state = visibilityStates.get(scope);\n if (!state) return;\n\n if (state.observer) {\n state.observer.unobserve(element);\n }\n\n // Clear timer\n const timer = state.timers.get(element);\n if (timer) {\n clearTimeout(timer);\n state.timers.delete(element);\n }\n\n // Clean up caches to prevent memory leaks\n elementSizeCache.delete(element);\n visibilityCache.delete(element);\n}\n\n/**\n * Creates an IntersectionObserver for the given scope\n */\nfunction createObserver(\n scope: Document | Element,\n): IntersectionObserver | undefined {\n const doc = (scope as Element).ownerDocument || (scope as Document);\n const win = doc.defaultView;\n if (!win || !win.IntersectionObserver) return undefined;\n\n return tryCatch(\n () =>\n new win.IntersectionObserver(\n (entries) => {\n entries.forEach((entry) => {\n handleIntersection(scope, entry);\n });\n },\n {\n rootMargin: '0px',\n threshold: [0, 0.5],\n },\n ),\n () => undefined,\n )();\n}\n\n/**\n * Handles intersection changes for observed elements\n */\nfunction handleIntersection(\n scope: Document | Element,\n entry: IntersectionObserverEntry,\n): void {\n const target = entry.target as HTMLElement;\n const state = visibilityStates.get(scope);\n\n if (!state) return;\n\n const existingTimer = state.timers.get(target);\n\n if (entry.intersectionRatio > 0) {\n // Optimize: Cache element size calculations to avoid repeated DOM queries\n const now = Date.now();\n let cached = elementSizeCache.get(target);\n\n // Cache element size for 1 second to reduce DOM queries\n if (!cached || now - cached.lastChecked > 1000) {\n const win = target.ownerDocument.defaultView!;\n cached = {\n isLarge: target.offsetHeight > win.innerHeight,\n lastChecked: now,\n };\n elementSizeCache.set(target, cached);\n }\n\n const meetsThreshold = entry.intersectionRatio >= 0.5;\n\n // Optimized visibility strategy:\n // - Standard elements: intersection ratio ≥ 0.5 is sufficient (fast)\n // - Large elements: need additional overlay/occlusion check (slower but necessary)\n const shouldTrigger =\n meetsThreshold || (cached.isLarge && isElementVisible(target));\n\n if (shouldTrigger) {\n // Get element configuration\n const elementConfig = state.elementConfigs?.get(target);\n\n // For multiple triggers, only proceed if this is a re-entry (was not visible, now visible)\n if (elementConfig?.multiple && elementConfig.blocked) return; // Don't trigger again\n\n // Only create timer if none exists\n if (!existingTimer) {\n const targetWin = target.ownerDocument.defaultView!;\n const timer = targetWin.setTimeout(async () => {\n // Final visibility check before triggering (cached for performance)\n if (isElementVisible(target)) {\n // Get element configuration to access context\n const elementConfig = state.elementConfigs?.get(target);\n if (elementConfig?.context) {\n await handleTrigger(\n elementConfig.context,\n target as Element,\n elementConfig.trigger,\n );\n }\n\n // Get fresh element config reference for state update\n const currentConfig = state.elementConfigs?.get(target);\n\n // For multiple triggers, mark as visible after firing\n if (currentConfig?.multiple) {\n currentConfig.blocked = true;\n } else {\n // Clean up and unobserve only if not a multiple trigger\n unobserveElement(scope, target);\n }\n }\n }, state.duration);\n\n state.timers.set(target, timer);\n }\n return;\n }\n }\n\n // Element isn't sufficiently in viewport - clear existing timer\n if (existingTimer) {\n clearTimeout(existingTimer);\n state.timers.delete(target);\n }\n\n // For multiple triggers, mark as not visible for re-entry detection\n const elementConfig = state.elementConfigs?.get(target);\n if (elementConfig?.multiple) {\n elementConfig.blocked = false;\n }\n}\n\n/**\n * Initializes visibility tracking for a scope (document/element)\n */\nexport function initVisibilityTracking(\n scope: Document | Element,\n duration = 1000,\n): void {\n if (visibilityStates.has(scope)) return; 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'visible' : 'impression',\n });\n state.observer.observe(element);\n }\n}\n\n/**\n * Destroys visibility tracking for a scope, cleaning up all resources\n */\nexport function destroyVisibilityTracking(scope?: Document | Element): void {\n if (!scope) return; // No scope provided, nothing to clean up\n\n const state = visibilityStates.get(scope);\n if (!state) return;\n\n if (state.observer) {\n state.observer.disconnect();\n }\n\n visibilityStates.delete(scope);\n}\n","import type { WalkerOS, Elb, Collector } from '@walkeros/core';\nimport { isString, isObject, isElementOrDocument } from '@walkeros/core';\nimport { createPushResult } from '@walkeros/collector';\nimport type {\n BrowserPushData,\n BrowserPushOptions,\n BrowserPushContext,\n} from './types/elb';\nimport type { Context, Settings } from './types';\nimport { getEntities, getGlobals } from './walker';\n\n/**\n * Translation layer that converts flexible browser source inputs\n * to the strict core collector format\n */\nexport function translateToCoreCollector(\n context: Context,\n eventOrCommand: unknown,\n data?: BrowserPushData,\n options?: BrowserPushOptions,\n pushContext?: BrowserPushContext,\n nested?: WalkerOS.Entities,\n custom?: WalkerOS.Properties,\n): Promise {\n const { elb, settings } = context;\n\n // Handle walker commands. `walker init` is browser-only (re-scans a DOM\n // scope for `data-elb*` tags and fires load triggers) and is dispatched\n // here because the collector must stay DOM-free. All other walker\n // commands route through elb to commonHandleCommand on the collector.\n // `initScope` arrives on `context` from the source factory to avoid a\n // static import of `./trigger` (which would form a load-time cycle).\n if (isString(eventOrCommand) && eventOrCommand.startsWith('walker ')) {\n if (eventOrCommand === 'walker init' && context.initScope) {\n const scopes = normalizeInitScopes(data, settings);\n for (const scope of scopes) {\n context.initScope(context, { ...settings, scope });\n }\n return Promise.resolve(createPushResult({ ok: true }));\n }\n return elb(eventOrCommand, data as WalkerOS.Properties);\n }\n\n // Handle event objects - add source and globals if missing\n if (isObject(eventOrCommand)) {\n const event = eventOrCommand;\n if (!event.source && settings.scope) {\n const scopeDoc = ((settings.scope as Element).ownerDocument ||\n settings.scope) as Document;\n const scopeWin = scopeDoc.defaultView!;\n event.source = getBrowserSource(scopeWin, scopeDoc);\n }\n\n // Add globals if not already present\n if (!event.globals && settings.scope) {\n event.globals = getGlobals(settings.prefix, settings.scope);\n }\n\n return elb(event);\n }\n\n // Extract entity name from event string\n const [entity] = String(\n isObject(eventOrCommand) ? eventOrCommand.name : eventOrCommand,\n ).split(' ');\n\n // Get data and context either from elements or parameters\n let eventData = isObject(data) ? (data as WalkerOS.Properties) : {};\n let eventContext: WalkerOS.OrderedProperties = {};\n\n let elemParameter: undefined | Element;\n let dataIsElem = false;\n\n // Check if data parameter is an element\n if (isElementOrDocument(data)) {\n elemParameter = data as Element;\n dataIsElem = true;\n }\n\n // Check if contextData parameter is an element\n if (isElementOrDocument(pushContext)) {\n elemParameter = pushContext as Element;\n } else if (isObject(pushContext) && Object.keys(pushContext).length) {\n eventContext = pushContext as WalkerOS.OrderedProperties;\n }\n\n // Extract data from element if provided\n if (elemParameter) {\n const entityObj = getEntities(\n settings.prefix || 'data-elb',\n elemParameter,\n ).find((obj) => obj.entity === entity);\n if (entityObj) {\n if (dataIsElem) eventData = entityObj.data;\n if (entityObj.context) eventContext = entityObj.context;\n }\n }\n\n // Derive win/doc from scope for browser-specific APIs\n const scopeDoc = settings.scope\n ? (((settings.scope as Element).ownerDocument ||\n settings.scope) as Document)\n : undefined;\n const scopeWin = scopeDoc?.defaultView;\n\n // Special handling for page events\n if (entity === 'page' && scopeWin) {\n eventData.id = eventData.id || scopeWin.location.pathname;\n }\n\n // Collect globals from the DOM scope\n const eventGlobals = getGlobals(settings.prefix, settings.scope);\n\n // Build unified event from various elb usage patterns\n const event: WalkerOS.DeepPartialEvent = {\n name: String(eventOrCommand || ''),\n data: eventData,\n context: eventContext,\n globals: eventGlobals,\n nested,\n custom,\n trigger: isString(options) ? options : '',\n source:\n scopeWin && scopeDoc ? getBrowserSource(scopeWin, scopeDoc) : undefined,\n };\n\n return elb(event);\n}\n\n/**\n * Create source information for browser events\n */\nfunction getBrowserSource(win: Window, doc: Document): WalkerOS.Source {\n return {\n type: 'browser',\n platform: 'web',\n url: win.location.href,\n referrer: doc.referrer,\n };\n}\n\n/**\n * Local type guard: narrows `unknown` to `Element | Document`. Prefers the\n * native `instanceof` check (works in browsers and JSDOM) and falls back to\n * the WhatWG DOM `nodeType` property for realms where the global Element or\n * Document constructors are not in scope (cross-frame, certain test\n * runners). Returns an accurate `Element | Document` union so callers do\n * not need casts.\n */\nfunction isDomScope(value: unknown): value is Element | Document {\n if (!value || typeof value !== 'object') return false;\n if (typeof Element !== 'undefined' && value instanceof Element) return true;\n if (typeof Document !== 'undefined' && value instanceof Document) return true;\n if ('nodeType' in value) {\n const nodeType = value.nodeType;\n // 1 = ELEMENT_NODE, 9 = DOCUMENT_NODE per the WhatWG DOM standard.\n return nodeType === 1 || nodeType === 9;\n }\n return false;\n}\n\n/**\n * Normalize the `data` argument of `elb('walker init', data)` to an array\n * of Element/Document scopes. 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