43 lines
1.2 KiB
TypeScript
43 lines
1.2 KiB
TypeScript
import fs = require('fs');
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let symlinkOrCopy = require('symlink-or-copy');
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/**
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* Stabilizes the inputPath for the following plugins in the build tree.
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*
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* All broccoli plugins that inherit from `broccoli-writer` or `broccoli-filter` change their
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* outputPath during each rebuild.
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*
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* This means that all following plugins in the build tree can't rely on their inputPath being
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* immutable. This results in breakage of any plugin that is not expecting such behavior.
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*
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* For example all `DiffingBroccoliPlugin`s expect their inputPath to be stable.
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*
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* By inserting this plugin into the tree after any misbehaving plugin, we can stabilize the
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* inputPath for the following plugin in the tree and correct the surprising behavior.
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*/
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class TreeStabilizer implements BroccoliTree {
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inputPath: string;
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outputPath: string;
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constructor(public inputTree: BroccoliTree) {}
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rebuild() {
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fs.rmdirSync(this.outputPath);
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// TODO: investigate if we can use rename the directory instead to improve performance on
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// Windows
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symlinkOrCopy.sync(this.inputPath, this.outputPath);
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}
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cleanup() {}
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}
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export default function stabilizeTree(inputTree: BroccoliTree): BroccoliTree {
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return new TreeStabilizer(inputTree);
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}
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