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add: immediateEffect#1813

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add: immediateEffect#1813
ged-odoo wants to merge 3 commits into
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ged-odoo and others added 3 commits March 20, 2026 14:46
Owl 3.0 is a major new version of the Owl framework with significant
changes to the reactivity system and application architecture.

Main changes:
- New reactivity system based on signals, computed values, and effects,
  replacing the proxy-based system. This provides a simpler, more explicit,
  and more composable model for reactive state management.
- Plugin system replacing the `env` object, offering a more structured and
  type-safe way to share state and features across components.
- Reworked props system with better typing support and validation.
- Simplified rendering context: all variables are local by default, and
  component properties must be accessed through `this.`.
- Various API improvements: new reference system using signals, simplified
  t-model with signal support, registries and resources integrated with
  reactivity.

Motivation:
Owl 2 served well but encountered "soft limits" as the codebase grew:
subtle reactivity bugs, limited typing support, difficulty writing
performant code with computed values, and lack of architectural guidance.
Owl 3.x addresses these challenges with computed functions for declarative
state coordination, plugins for composable architecture, and signals for
simpler reactivity.

Co-authored-by: Julien Mougenot <jum@odoo.com>
Co-authored-by: Lucas Lefèvre <lul@odoo.com>
Co-authored-by: Michaël Mattiello <mcm@odoo.com>
Co-authored-by: Nicolas Bayet <nicolas.bayet@gmail.com>
Updated the playground application to work with Owl 3. All examples
have been rewritten to use the new signal-based reactivity system,
the plugin system, and the updated template syntax with `this.`
for component property access.
@ged-odoo ged-odoo force-pushed the next branch 5 times, most recently from 43d0c90 to c89515a Compare March 30, 2026 08:43
Base automatically changed from next to master March 30, 2026 08:55
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