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Add -ifChanged option to tsc #14453

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mihailik opened this issue Mar 4, 2017 · 1 comment

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mihailik commented Mar 4, 2017

As TSC resolves the graph of inputs, it can collect timestamps on file and compare with output[s] timestamp[s].

Currently this check needs to be done in external tooling, and cannot be very precise (indeed there were bugs in TS build dependency calculation itself!)

TSC is in the best position to know the full dependencies/outputs graph -- and can skip emit if outputs are younger than inputs.

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mhegazy commented Mar 9, 2017

covered by #10879

mhegazy added the Duplicate label

mhegazy closed this as completed

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