use dynamic import

vega · Nov 19, 2024 · 3222264 · 3222264
1 parent 9059240
commit 3222264
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Showing 2 changed files with 13 additions and 12 deletions.
diff --git a/bin/vl2vg b/bin/vl2vg
@@ -4,7 +4,6 @@
 
 const {createWriteStream} = require('fs');
 const vegaLite = require('..');
-const compactStringify = require('json-stringify-pretty-compact');
 const read = require('./read');
 const args = require('./args');
 
@@ -13,13 +12,14 @@ const arg = args('vega');
 // load spec, compile vg spec
 read(arg._[0]).then(text => compile(JSON.parse(text)));
 
-function compile(vlSpec) {
+async function compile(vlSpec) {
   // @ts-ignore
   const vgSpec = vegaLite.compile(vlSpec).spec;
 
   const file = arg._[1] || null;
   const out = file ? createWriteStream(file) : process.stdout;
   if (arg.p) {
+    const compactStringify = (await import('json-stringify-pretty-compact')).default;
     out.write(compactStringify(vgSpec) + '\n');
   } else {
     out.write(JSON.stringify(vgSpec) + '\n');

diff --git a/scripts/build-normalized-examples b/scripts/build-normalized-examples
@@ -12,15 +12,17 @@
 const fs = require('fs');
 const vl = require('../build/vega-lite');
 const stableStringify = require('fast-json-stable-stringify');
-const compactStringify = require('json-stringify-pretty-compact');
 
 const DIR = __dirname + '/..';
 const SPECS = '/examples/specs';
 const examples = fs.readdirSync(DIR + SPECS);
 
-examples.forEach(example => {
-  if (example && example.includes('.vl.json')) {
-    const path = DIR + SPECS + '/' + example;
+async function main() {
+  const {default: compactStringify} = await import('json-stringify-pretty-compact');
+
+  const vlExamples = examples.filter(example => example.includes('.vl.json'));
+  for (const example of vlExamples) {
+    const path = `${DIR + SPECS}/${example}`;
     const spec = JSON.parse(fs.readFileSync(path));
 
     const preNormalized = stableStringify(spec);
@@ -32,11 +34,10 @@ examples.forEach(example => {
       const postNormalizedOutput = compactStringify(fullSpec, null, 2);
       // -8 is cutting .vl.json
       const newFilename = example.slice(0, -8) + '_normalized.vl.json';
-      const newFilenameAndPath = DIR + SPECS + '/normalized/' + newFilename;
-      fs.writeFile(newFilenameAndPath, postNormalizedOutput, err => {
-        if (err) return console.log(err);
-        console.log('Built:', newFilename);
-      });
+      const newFilenameAndPath = `${DIR + SPECS}/normalized/${newFilename}`;
+      fs.writeFileSync(newFilenameAndPath, postNormalizedOutput);
     }
   }
-});
+}
+
+main();