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chore: improve build responsiveness (#2992)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| const chokidar = require("chokidar"); | ||
| const commandLineArgs = require("command-line-args"); | ||
| const { exec } = require("child_process"); | ||
|
|
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| const options = commandLineArgs([ | ||
| { name: "srcFiles", type: String }, | ||
| ]); | ||
|
|
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| const runPostcss = path => { | ||
| let command = `postcss ${path} --config config/postcss.components --base src --dir dist/css/`; | ||
| console.log(`Executing: ${command}`); | ||
| exec(command, (err, stdout, stderr) => { | ||
| if (err) { | ||
| console.log(`Could not run postcss for ${path}. Error: ${err}`); | ||
| } | ||
| }); | ||
|
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| command = `${command} -w`; | ||
| console.log(`Executing: ${command}`); | ||
| exec(command, (err, stdout, stderr) => { | ||
| if (err) { | ||
| console.log(`Could not run postcss in watch mode for ${path}. Error: ${err}`); | ||
| } | ||
| }); | ||
| }; | ||
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| let ready = false; // Do nothing until the ready event has been fired (we don't want to recompile all files initially) | ||
| const watcher = chokidar.watch(options.srcFiles); | ||
| watcher.on("ready", () => { | ||
| ready = true; // Initial scan is over -> waiting for new files | ||
| }); | ||
| watcher.on("add", path => { | ||
| if (ready) { | ||
| runPostcss(path); | ||
| } | ||
| }); |
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