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< title > before-build-all | Documentation | Lektor Static Content Management System< / title >
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< h1 > < i class = "glyphicon glyphicon-flash" > < / i > < code class = "obj" > before-build-all< / code > < span class = "sig" > (< code > builder< / code > )< / span > < / h1 >
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< p > This event is emitted before the builder decides to build all sources. It's
most useful for preprocessing sources on the file system before the rest of
the build process should pick it up. For instance here a plugin could inject
additional files into the asset folder and similar things.< / p >
< p > As an example, this is what the < a href = "../../../../guides/webpack/" class = "ref" > Webpack Support< / a > uses.< / p >
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< h2 id = "example" > Example< / h2 > < div class = "highlight" > < pre > < span > < / span > < span class = "kn" > import< / span > < span class = "nn" > subprocess< / span >
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< span class = "k" > def< / span > < span class = "nf" > on_before_build_all< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > builder< / span > < span class = "p" > ,< / span > < span class = "o" > **< / span > < span class = "n" > extra< / span > < span class = "p" > ):< / span >
< span class = "n" > root< / span > < span class = "o" > =< / span > < span class = "n" > ospath< / span > < span class = "o" > .< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > env< / span > < span class = "o" > .< / span > < span class = "n" > root_path< / span > < span class = "p" > ,< / span > < span class = "s1" > ' webpack' < / span > < span class = "p" > )< / span >
< span class = "n" > subprocess< / span > < span class = "o" > .< / span > < span class = "n" > Popen< / span > < span class = "p" > ([< / span > < span class = "s1" > ' webpack' < / span > < span class = "p" > ],< / span > < span class = "n" > cwd< / span > < span class = "o" > =< / span > < span class = "n" > root< / span > < span class = "p" > )< / span > < span class = "o" > .< / span > < span class = "n" > wait< / span > < span class = "p" > ()< / span >
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< a href = "../../../../../plugins/tag/before-build-all/" class = "ref" > Plugins That Use This Event< / a >
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