Add polyfills for IProgress<T>, Progress<T>, and EventHandler<T>#120

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Tyrrrz merged 10 commits intoprimefrom

copilot/add-polyfill-for-progress

Apr 17, 2026

Commits on Apr 17, 2026

Add polyfills for IProgress<T> and Progress<T>

Copilot
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Tyrrrz
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Fix test naming convention in ProgressTests

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Tyrrrz
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Add missing using var for ManualResetEventSlim in ProgressTests

Copilot
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Tyrrrz
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Add EventHandler<T> polyfill; refactor Progress<T> with primary constructor and is not null

Copilot
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Tyrrrz
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Revert primary constructor; use BCL-matching Progress() and Progress(Action<T>) constructors

Copilot
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Tyrrrz
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Use target-typed new() and inverted early-return guard in OnReport

Copilot
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Tyrrrz
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Update Progress.cs
Tyrrrz
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Inline OnReport guard: use if condition directly on Post call

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Tyrrrz
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Capture delegates at Report time to eliminate race in OnReport/InvokeHandlers

Copilot
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Tyrrrz
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Update Progress.cs
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