Future roadmap

V5.0

v5.1

• Copy Title element value to iframe title attribute
• Add scrollBy() method
• Add waitForLoad option
• Add Parent option to create data-iframe-size attrs via CSS selector (sizeSelector)
• Log when new element is used to calculate size

v5.2

• Investigate if IntersectionObserver can be used to detect which elements are outside the <body/>
• set window.location.hash when setting inPageLinks
• Alias offsetSize -> offset
• Investigate scrolling with sticky headers
  • #794

v5.3

• Optimise performance
• Log init/resize calculation timer
• Remove warning component dependancy in React version
• Isolate parent/child when messages passed via same-domain iframe
• Use setTimeout(0) on user events with void return type
• Check HTMLIFrameElement: sandbox allows JavaScript, when no response from iframe

v5.4

• Use auto-console-group for log output
• ingnoreSelector & data-iframe-ignore
• setOffsetSize()
• log: 'collapsed’ option
• onBeforeResize(newSize)

v5.5

• Direction both
• Add support for loading=“lazy”
• Detect when iframe is hidden on parent page
• Detect and warn about reused IDs on parent iframe tags
• Detect cross-origin errors and provide a better warning message
• Alias onBeforeClose -> onClose
• Alias onAfterClose -> onClosed

v6.0.0

Native TypeScript

• Migrate to TypeScript
• Restructure into modular code base
• Remove NameSpace from parent types
• Convert API consts to Union Types

New Features

• Detect changes to child <title/> and update parent
• Skip initial postMessage for local iframes.
• Always use auto calculation method with V4 and before parent pages
• Add support for multiple target origins (parent)
  • #707
• Add support for multiple target origins (child)
• Add numeric shorthand for log option (0=disabled, 1=collapsed, 2=expanded)
• Add getVersion() : { parent, child }
  • #1551
• Update onBeforeResize(newSize, event, direction)
  • #1591

Platforms

• Add support for React.forwardRef()
• Distribute Angular version on NPM, instead of source code
• Drop support for Vue 2

Tests

• Unit tests expanded to 99% coverage
• Expanded integration tests
• Added e2e tests

Fixes

• Fix overflowObserver check in Safari 16 and below.
• #1668
• Intermittent race conditions in Jasmine integration tests — added delays/guards to prevent flaky test failures
• targetOrigin

Type Deprecations

• waitForLoad - no longer required in modern browsers
• React.getElement() - non-standard API

Chore

• Migrate from Rollup to Vite
• Migrate from Jest to ViTest
• Remove v5 deprecated methods
• Remove legacy package
• Remove iFrameResizer references, use iframeResizer instead
• Enforce license with V4 parent

v6.1

• Add addEventListener/removeEventListener
  • #710
• Add option to inject child script into new same origin child pages

New warnings

• Detect and warn about resize loops
• Detect and warn when an iframe is removed from the page before being disconnected
• Detect and warn about elements anchored to the page bottom/right of the page

Framework components / plugins

• React
• Vue 3
• Alpine
• Astro
• Svelte
• SolidJS
• Angular
• jQuery
• Web Components