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Leverage terser to mangle/compress the generated js messages #1086

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Merged
merged 3 commits into from
Mar 13, 2025
Merged

Leverage terser to mangle/compress the generated js messages #1086

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e67b241
Leverage terser to mangle/compress the generated js messages
minggangw Mar 13, 2025
fed3366
Address comments
minggangw Mar 13, 2025
2cf0713
Don't remove blank line
minggangw Mar 13, 2025
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11 changes: 6 additions & 5 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -18,15 +18,15 @@
"rebuild": "npm run clean && node-gyp -j 16 rebuild",
"rebuild:dev": "npm run clean && node-gyp -j 16 rebuild --debug",
"generate-messages": "node scripts/generate_messages.js",
"generate-messages:dev": "node scripts/generate_messages.js --debug",
"generate-messages:dev": "node scripts/generate_messages.js --debug && npx --yes prettier --ignore-path --write generated/**/*.js",
"generate-tsd-messages": "node scripts/generate_tsd.js",
"clean": "node-gyp clean && npx rimraf@6.0.1 ./generated",
"clean": "node-gyp clean && npx rimraf ./generated",
"install": "npm run rebuild",
"postinstall": "npm run generate-messages",
"docs": "cd docs && make",
"test": "nyc node --expose-gc ./scripts/run_test.js && npx tsd",
"test": "nyc node --expose-gc ./scripts/run_test.js && tsd",
"lint": "eslint && node ./scripts/cpplint.js",
"format": "clang-format -i -style=file ./src/*.cpp ./src/*.hpp && prettier --write \"{lib,rosidl_gen,rostsd_gen,rosidl_parser,types,example,test,scripts,benchmark,rostsd_gen}/**/*.{js,md,ts}\" ./*.{js,md,ts}",
"format": "clang-format -i -style=file ./src/*.cpp ./src/*.hpp && npx --yes prettier --write \"{lib,rosidl_gen,rostsd_gen,rosidl_parser,types,example,test,scripts,benchmark,rostsd_gen}/**/*.{js,md,ts}\" ./*.{js,md,ts}",
"prepare": "husky",
"coverage": "cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js"
},
Expand Down Expand Up @@ -62,6 +62,7 @@
"lint-staged": "^15.2.10",
"mocha": "^11.0.2",
"nyc": "^17.1.0",
"rimraf": "^6.0.1",
"sinon": "^19.0.2",
"tree-kill": "^1.2.2",
"tsd": "^0.31.2",
Expand All @@ -79,7 +80,7 @@
"is-close": "^1.3.3",
"json-bigint": "^1.0.0",
"nan": "^2.22.0",
"prettier": "^3.4.2",
"terser": "^5.39.0",
"walk": "^2.3.15"
},
"husky": {
Expand Down
15 changes: 11 additions & 4 deletions rosidl_gen/idl_generator.js
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@
'use strict';

const dot = require('dot');
const prettier = require('prettier');
const { minify } = require('terser');
const fse = require('fs-extra');
const path = require('path');
const parser = require('../rosidl_parser/rosidl_parser.js');
Expand All @@ -41,11 +41,18 @@ function removeEmptyLines(str) {
* @param {string} code
*/
async function writeGeneratedCode(dir, fileName, code) {
if (fileName.endsWith('.js')) {
code = await prettier.format(code, { parser: 'babel' });
let result = null;
if (!isDebug && fileName.endsWith('.js')) {
try {
result = await minify(code);
} catch (error) {
console.error(`Error minifying ${fileName}:`, error);
result = null;
}
}

await fse.mkdirs(dir);
await fse.writeFile(path.join(dir, fileName), code);
await fse.writeFile(path.join(dir, fileName), result ? result.code : code);
}

async function generateServiceJSStruct(
Expand Down
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