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fix(cdk/stepper): error if out-of-bounds index is assigned before initialization #20766

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merged 1 commit into from
Nov 3, 2020

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crisbeto
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Fixes an error if an out-of-bounds index is assigned before the steps are available and the user tries to navigate. Usually we have an assertion that prevents invalid indexes from being assigned, but it doesn't run before initialization, because we don't know how many steps there will be yet.

These changes add a check that will revert the index back to 0 if the index is invalid on initialization.

Fixes #20735.

…tialization

Fixes an error if an out-of-bounds index is assigned before the steps are
available and the user tries to navigate. Usually we have an assertion that
prevents invalid indexes from being assigned, but it doesn't run before
initialization, because we don't know how many steps there will be yet.

These changes add a check that will revert the index back to 0 if the index
is invalid on initialization.

Fixes angular#20735.
@crisbeto crisbeto added P4 A relatively minor issue that is not relevant to core functions target: patch This PR is targeted for the next patch release labels Oct 11, 2020
@crisbeto crisbeto requested a review from mmalerba as a code owner October 11, 2020 11:56
@google-cla google-cla bot added the cla: yes PR author has agreed to Google's Contributor License Agreement label Oct 11, 2020
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Raising the priority since we got another report about the same issue.

@crisbeto crisbeto added P3 An issue that is relevant to core functions, but does not impede progress. Important, but not urgent and removed P4 A relatively minor issue that is not relevant to core functions labels Oct 29, 2020
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LGTM

@mmalerba mmalerba added the action: merge The PR is ready for merge by the caretaker label Oct 30, 2020
@annieyw annieyw merged commit d3a2718 into angular:master Nov 3, 2020
annieyw pushed a commit that referenced this pull request Nov 3, 2020
…tialization (#20766)

Fixes an error if an out-of-bounds index is assigned before the steps are
available and the user tries to navigate. Usually we have an assertion that
prevents invalid indexes from being assigned, but it doesn't run before
initialization, because we don't know how many steps there will be yet.

These changes add a check that will revert the index back to 0 if the index
is invalid on initialization.

Fixes #20735.

(cherry picked from commit d3a2718)
annieyw pushed a commit that referenced this pull request Nov 3, 2020
…tialization (#20766)

Fixes an error if an out-of-bounds index is assigned before the steps are
available and the user tries to navigate. Usually we have an assertion that
prevents invalid indexes from being assigned, but it doesn't run before
initialization, because we don't know how many steps there will be yet.

These changes add a check that will revert the index back to 0 if the index
is invalid on initialization.

Fixes #20735.

(cherry picked from commit d3a2718)
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action: merge The PR is ready for merge by the caretaker cla: yes PR author has agreed to Google's Contributor License Agreement P3 An issue that is relevant to core functions, but does not impede progress. Important, but not urgent target: patch This PR is targeted for the next patch release
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MatStepper - Cannot set property 'interacted' of undefined
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