Angular Timeline & Progress Steps | ng-hub-ui-milestones
Angular timeline and progress-steps component: vertical or horizontal, fully customizable nodes, content inside and beside each step, themed with CSS variables.
Last updated Sep 28, 2026
Overview
Why teams search for this library
Choose this Angular timeline component when you need a presentational progress tracker — onboarding flows, order tracking, roadmaps — with custom nodes and both vertical and horizontal layouts.
Install
npm install ng-hub-ui-milestonesJump to
Ideal for
- onboarding flows
- order tracking
- roadmaps
- process steps
About milestones
ng-hub-ui-milestones lays out a series of steps connected by a rail, vertically or horizontally. Each node is fully customizable — number, icon, avatar or any markup inside the circle, plus rich content beside it — and every colour, size and connector is a CSS variable, so it re-themes at runtime.
Feature guides
Orientation
Lay the timeline out vertically (the default, ideal for wizards and activity feeds) or horizontally (progress steps across the top of a page). Nodes are numbered automatically in DOM order.
Examples:
Vertical timeline
Vertical timeline
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Horizontal progress steps
Horizontal progress steps
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Node states
Each `hub-milestone` carries a `state` — complete, active, pending or error — that drives the node and connector colors. The `label` input renders fallback text inside the circle.
Examples:
Node states
Node states
Complete
A finished step. Announced as “Completed”.
Active
The current step, highlighted with a ring and carrying aria-current="step".
Error
Something needs attention here. The mark on the circle says so without colour, and the step is announced as “Error”.
Pending
Not started yet — and announced as “Sin empezar”, because this node sets stateLabel.
Custom nodes & theming
Project any content into the circle with `<ng-template hubMilestoneNode>` (numbers, icons, emoji, avatars), override a single node with `color`, or re-theme the whole timeline through `--hub-milestone-*` CSS variables.
Examples:
Custom nodes & per-node color
Custom nodes & per-node color
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Publishing
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Scheduled for next week.
CSS-variable theming
CSS-variable theming
Kickoff
Project scoped and approved.
Build
Core features shipped.
Launch
Rolling out to production.
Animation
When the timeline scrolls into view it completes its accent trail up to the active node — on by default and configurable globally with `provideHubMilestones`. Add `[pulse]` to make the active node emit a soft wave. Both animations respect `prefers-reduced-motion`.
Examples:
Horizontal with active pulse
Horizontal with active pulse
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Key features
Recent changes
Version 22.7.1 - 9/28/26, 12:00 AM
changed: The family list in both READMEs names `ng-hub-ui-spreadsheet`. The sheet joined the family and the other lists had not caught up. Documentation only: no code, types or styles change.
Version 22.7.0 - 9/24/26, 12:00 AM
changed: BREAKING: a node's ink is derived from the node's own colour instead of always being white. The disc's colour belongs to the consumer, and white on a light accent was unreadable — the custom-nodes example measured 2.15:1 on amber, 2.77:1 on sky and 3.30:1 on green, against the 4.5:1 text that size has to reach. The ink is now the black or white end of the ramp, chosen from the disc's own lightness with the same expression the design system computes --hub-sys-color-*-on with, so an accent takes one ink everywhere; those three become 9.78:1, 7.58:1 and 6.37:1 and the nine ds accents keep what they had. --hub-milestone-node-text is no longer declared by default but is still read first, so setting it still wins. See BREAKING_CHANGES.md.
fixed: The error badge keeps its light disc. It used to borrow --hub-milestone-node-text, which now follows the node colour and would have turned the badge black on any light accent.
Version 22.6.0 - 9/23/26, 12:00 AM
changed: BREAKING: the Angular floor rises from 17.2.0 to 17.3.0. The old range was measured from the source alone, and its published `.d.ts` names `InputSignalWithTransform` or `OutputEmitterRef`, which Angular did not ship until 17.3. An application below the new floor could install this package and then fail to build; it now gets the peer warning it should always have had. Nothing that worked stops working. See BREAKING_CHANGES.md.
Version 22.5.2 - 9/23/26, 12:00 AM
changed: The Angular peer range now says what the code needs. It asked for >=21.0.0, which nothing in this package justified: the newest Angular API the source uses is the signal queries, which shipped in 17.2, and the compiled output carries no linker marker above it. The range is >=17.2.0, and npm run peers:floors derives and checks that floor from now on.
Version 22.5.1 - 9/16/26, 12:00 AM
changed: Repository, issue and README links follow the move to the hub-env organization. Issues for every Hub UI package are now gathered in hub-env/hub-ui, and the repository and bugs fields of the manifest point at the new addresses. No code, types or styles change.
Version 22.5.0 - 9/8/26, 12:00 AM
added: A milestone in error is no longer distinguishable by colour alone. It was a red circle and nothing else, and the rail carries aria-hidden="true", so the state reached nobody who does not separate red from green. Every node now renders its state as a word in the body, clipped out of the page and read out with the step, and an error node additionally draws a light mark on its circle that survives greyscale.
added: stateLabel on hub-milestone and stateLabels in HubMilestonesConfig: the announced word is English by default (Completed, Pending, Error, and nothing for active, which aria-current already names), and these two are how it gets translated. The per-node input wins over the application-wide option, and '' silences one node or one state.
added: data-state on hub-milestone, mirroring the state the modifier classes already carry — the same attribute hook toast, badges and stepper expose for styling and for tests.
changed: The node body now contains one clipped span before the projected content. Nothing moves on screen and no API changes, but a test asserting on the exact textContent of a milestone body will see the state word alongside its own copy.
Version 22.4.0 - 9/7/26, 12:00 AM
fixed: A :root in the application now outranks the library's token defaults. The component is unencapsulated, so its :root block of --hub-milestone-* defaults lands in the global stylesheet with the same specificity as the application's own :root, and the tie goes to whichever sheet was injected last — the component's, always. Wrapped in :where() the defaults score zero, so the consumer's rule wins on merit and nothing needs !important. Same tokens, same values; only what wins changed.
changed: The Styling section of both READMEs says where a redefinition actually lands. It listed :root, a hub-milestones selector and the per-node color input as equivalent, when the first of the three did nothing.
Version 22.3.3 - 9/6/26, 12:00 AM
fixed: The documentation no longer denies the ng-hub-ui-utils dependency the package requires. Both READMEs advertised zero runtime dependencies and an install line naming this package alone, while peerDependencies has demanded ng-hub-ui-utils since 22.3.0, so a reader installing by hand ended up with an application that cannot resolve resolveHubAccent. The install block now names both packages and states the peer range.
fixed: hubMilestoneNode is described as what it is: an attribute directive. Calling it structural set the wrong expectation about where its content appears. It only tags a template, and hub-milestone is what renders it inside the circle.
fixed: HUB_MILESTONES_CONFIG is in the API reference. The token is exported from public-api.ts and is the only way to read the resolved application defaults, yet neither README named it.
fixed: The Styling section documents the SCSS the package ships. The theming mixin and the styles entry point have been published since 22.2.0 with no trace in either README, leaving the one-call theming path visible only to whoever read the changelog.
Version 22.3.2 - 9/1/26, 12:00 AM
changed: The homepage in the manifest points at this library's own documentation page rather than at the site root. It is the link a registry shows beside the package and the one a reader clicks from it, and landing on a front page they then have to search is a worse answer than landing on the reference for the package they were already looking at. Metadata only — no code, no types, no styles change, and nothing a consumer imports is affected.
Version 22.3.1 - 8/8/26, 12:00 AM
fixed: Documentation links now point at the canonical localized URLs. The README linked to https://hubui.dev/<path> with no locale prefix and no trailing slash, and both forms are 301-redirected, so every reader arriving from npm or GitHub landed on a redirect instead of the canonical page.
Version 22.3.0 - 7/28/26, 12:00 AM
changed: Accent resolution now imports the canonical resolveHubAccent from ng-hub-ui-utils. The private copy under src/lib/shared/resolve-hub-accent.ts has been deleted in favour of the single, tested implementation shared family-wide. Behaviour is identical (the copy had not diverged): a bareword resolves to var(--hub-sys-color-<name>, <name>), a literal colour passes through unchanged, an empty value yields null.
added: NEW peer dependency: ng-hub-ui-utils >=22.7.0. Consumers must have ng-hub-ui-utils installed alongside this library (it is where resolveHubAccent lives). Users installing via ng add ng-hub-ui get it automatically; manual installs need npm i ng-hub-ui-utils.
Version 22.2.1 - 7/28/26, 12:00 AM
fixed: Each milestone exposes role=listitem and the active node announces aria-current=step, completing the list semantics the container already declared.
Version 22.2.0 - 7/7/26, 12:00 AM
added: hub-milestones-theme(...) SCSS mixin — one-call token theming for <hub-milestones>, covering the full --hub-milestone-* surface: completed steps ($node-color, $node-text, $node-size, $node-font-size, $connector-bg, $connector-thickness), upcoming steps ($pending-bg, $pending-border, $pending-color, $connector-pending-bg), the error state ($error-bg), the step body ($body-color, $body-muted) and layout ($gap, $spacing). Every parameter is null-defaulted and additive.
changed: Packaging — the library now ships its SCSS at /styles. src/lib/styles is emitted to dist/milestones/styles, exposing hub-milestones-theme as a first-class package entry: @use 'ng-hub-ui-milestones/styles' as *;
Version 22.1.0 - 7/7/26, 12:00 AM
changed: <hub-milestone> color accepts ANY colour. On top of the built-in semantic accents, the input now also accepts a registered custom accent and a literal colour (#ff0000, rgb(...), oklch(...), a CSS named colour), resolved through the shared resolveHubAccent resolver: a bareword becomes var(--hub-sys-color-<name>, <name>); a literal is used as-is. Built-in colours are unchanged.
changed: Internal — host bindings moved to the host metadata object. @HostBinding / @HostListener decorators were replaced by the host object in the component and directive metadata (Angular style guide). No public API or behaviour change.
Version 22.0.3 - 6/25/26, 12:00 AM
changed: Widened the Angular peer dependency range from ^22.0.0 to >=21.0.0, so the library installs on Angular 21 projects as well, aligning it with the rest of the ng-hub-ui family. No code changes.
Version 22.0.2 - 6/25/26, 12:00 AM
added: Viewport reveal — when a <hub-milestones> scrolls into view it plays a one-shot animation, filling the accent trail from the first node up to the active node. On by default; set it globally with provideHubMilestones({ reveal: false }) or per instance with [reveal]. Tunable via --hub-milestone-reveal-duration / --hub-milestone-reveal-stagger, SSR-safe and disabled under prefers-reduced-motion.
added: provideHubMilestones() provider and HubMilestonesConfig for app-wide defaults, plus the [pulse] input on <hub-milestones> — an opt-in soft wave on the active node whose colour follows the node accent and is overridable via --hub-milestone-pulse-color / --hub-milestone-pulse-duration / --hub-milestone-pulse-spread.
fixed: Connectors now reach from node to node: the connector is absolutely positioned and always spans node edge to next-node edge, in both orientations. Its colour follows the theme accent (--hub-milestone-node-color) instead of the hardcoded purple-to-orange gradient, the accent trail stops at the active node so the timeline reads as a real progress indicator, and layout, connectors and the reveal flip correctly under dir='rtl'.
Version 22.0.1 - 6/25/26, 12:00 AM
fixed: Design-token consistency pass: aligned inline fallback defaults with the canonical ng-hub-ui-ds values and routed hardcoded literals (z-index, font-weight, line-height, radii and theme-aware colours) through their --hub-sys-* / --hub-ref-* tokens, so they follow the active theme. No visual change when the ds tokens are loaded.
Version 22.0.0 - 6/17/26, 12:00 AM
changed: Aligned with Angular 22. README documentation standardized.
Version 21.0.0 - 6/14/26, 12:00 AM
added: Initial release: hub-milestones container (vertical / horizontal orientation, auto-numbered nodes) and hub-milestone node with complete/active/pending/error states.
added: Per-node color override, label fallback and custom in-circle content via the hubMilestoneNode template directive.
added: Full --hub-milestone-* CSS-variable theming for node, connector, states and spacing.
Related libraries
Frequently asked questions
How do I build a timeline component in Angular?
Install ng-hub-ui-milestones and give HubMilestonesComponent a list of steps. It draws the rail and the nodes and marks each step's state, which makes it a fit for order tracking, onboarding flows and project roadmaps where the timeline is presentational rather than interactive.
Can the timeline be horizontal instead of vertical?
Yes. HubMilestonesOrientation switches the whole layout between vertical and horizontal with one input, and the same step content works in both — useful when the timeline is a sidebar on desktop and a horizontal strip on narrow screens.
How do I put custom content inside each timeline node?
HubMilestoneNodeDirective replaces the circle at each step, so a node can be a number, an icon, an avatar or any markup you want. Rich content can also sit beside the node, which is how you attach dates, descriptions or actions to a step.
What is the difference between a timeline and a stepper in Angular?
A timeline shows progress that has already happened or is planned, and the user does not drive it. A stepper guides someone through a form or a wizard, validating each step. Use ng-hub-ui-milestones to display a sequence and ng-hub-ui-stepper when the user must advance through it.