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| 1 | package app.lab; | |
| 2 | ||
| 3 | import java.io.BufferedWriter; | |
| 4 | ||
| 5 | public class BabelLab {
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| 6 | public static void main(String[] args) throws Exception {
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| 7 | // https://github.com/Daniel15/babel-standalone | |
| 8 | String babelPath = "src/main/webapp/resources/js/babel.min.js"; | |
| 9 | Reader babelScript = new InputStreamReader(new FileInputStream(babelPath), StandardCharsets.UTF_8.name()); | |
| 10 | ScriptEngine engine = new ScriptEngineManager().getEngineByMimeType("text/javascript");
| |
| 11 | ||
| 12 | SimpleBindings bindings = new SimpleBindings(); | |
| 13 | engine.eval(babelScript, bindings); | |
| 14 | ||
| 15 | String eval = "Babel.transform(input, { presets: ['es2015', 'react', 'stage-2'] }).code";
| |
| 16 | // bindings.put("input", "<Component name={name} age='16' hobby={'reading'} />");
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| 17 | // Object output = engine.eval(eval, bindings); | |
| 18 | // System.out.println(output); | |
| 19 | ||
| 20 | Map<String, String> jsxPathMap = new ImmutableMap.Builder<String, String>() | |
| 21 | .put("src/main/webapp/resources/js/form.js.jsx", "src/main/webapp/resources/js/form.js")
| |
| 22 | .put("src/main/webapp/resources/js/reactcomp.js.jsx", "src/main/webapp/resources/js/reactcomp.js")
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| 23 | .build(); | |
| 24 | for (String jsxPath: jsxPathMap.keySet()) {
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| 25 | byte[] fileBytes = Files.readAllBytes(new File(jsxPath).toPath()); | |
| 26 | String fileString = new String(fileBytes, StandardCharsets.UTF_8.name()); | |
| 27 | bindings.put("input", fileString);
| |
| 28 | System.out.print("converting " + jsxPath + " ... ");
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| 29 | String outputx = (String) engine.eval(eval, bindings); | |
| 30 | String outPath = jsxPathMap.get(jsxPath); | |
| 31 | System.out.println("Done ! Now writing to " + outPath);
| |
| 32 | try (BufferedWriter writer = new BufferedWriter(new FileWriter(outPath))) {
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| 33 | writer.write(outputx); | |
| 34 | } | |
| 35 | } | |
| 36 | } | |
| 37 | } |
