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ensure @swc/helpers usage to optimize bundle size and performance

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This commit is contained in:
Nacho Codoñer
2025-07-01 10:30:06 +02:00
parent 0c12f4a16e
commit da7ea207a2
1 changed files with 43 additions and 1 deletions
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44
packages/babel-compiler/babel-compiler.js
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@@ -34,6 +34,9 @@ BCp.isVerbose = function(config = getMeteorConfig()) {
if (config?.modern?.transpiler?.verbose) {
return true;
}
if (config?.modern?.verbose) {
return true;
}
if (config?.verbose) {
return true;
}
@@ -129,7 +132,7 @@ BCp.initializeMeteorAppSwcrc = function () {
lastModifiedSwcConfig = getMeteorAppSwcrc(swcFile);
if (this.isVerbose()) {
logConfigBlock('SWC Config', lastModifiedSwcConfig);
logConfigBlock('SWC Custom Config', lastModifiedSwcConfig);
}
}
return lastModifiedSwcConfig;
@@ -145,6 +148,42 @@ BCp.initializeMeteorAppLegacyConfig = function () {
return lastModifiedSwcConfig;
};
// Helper function to check if @swc/helpers is available
function hasSwcHelpers() {
return fs.existsSync(`${getMeteorAppDir()}/node_modules/@swc/helpers`);
}
// Helper function to log friendly messages about SWC helpers
function logSwcHelpersStatus(isAvailable) {
const label = color('[SWC Helpers]', 36);
if (isAvailable) {
// Green message for when helpers are available
console.log(`${label} ${color('✓ @swc/helpers is available in your project!', 32)}`);
console.log(` ${color('Benefits:', 32)}`);
console.log(` ${color('• Smaller bundle size: External helpers reduce code duplication', 32)}`);
console.log(` ${color('• Faster loads: less code to parse on first download', 32)}`);
console.log(` ${color('• Optional caching: separate vendor chunk can be cached by browsers', 32)}`);
} else {
// Yellow message for when helpers are not available
console.log(`${label} ${color('⚠ @swc/helpers is not available in your project', 33)}`);
console.log(` ${color('Suggestion:', 33)}`);
console.log(` ${color('• Add @swc/helpers to your project:', 33)}`);
console.log(` ${color('meteor npm install --save @swc/helpers', 33)}`);
console.log(` ${color('• This will reduce bundle size and improve performance', 33)}`);
}
console.log();
}
let hasSwcHelpersAvailable = false;
BCp.initializeMeteorAppSwcHelpersAvailable = function () {
hasSwcHelpersAvailable = hasSwcHelpers();
if (this.isVerbose()) {
logSwcHelpersStatus(hasSwcHelpersAvailable);
}
return hasSwcHelpersAvailable;
};
BCp.processFilesForTarget = function (inputFiles) {
var compiler = this;
@@ -154,6 +193,7 @@ BCp.processFilesForTarget = function (inputFiles) {
this.initializeMeteorAppConfig();
this.initializeMeteorAppSwcrc();
this.initializeMeteorAppLegacyConfig();
this.initializeMeteorAppSwcHelpersAvailable();
inputFiles.forEach(function (inputFile) {
if (inputFile.supportsLazyCompilation) {
@@ -284,6 +324,7 @@ BCp.processOneFileForTarget = function (inputFile, source) {
jsx: hasJSXSupport,
tsx: hasTSXSupport,
},
...(hasSwcHelpersAvailable && { externalHelpers: true }),
},
module: { type: 'es6' },
minify: false,
@@ -356,6 +397,7 @@ BCp.processOneFileForTarget = function (inputFile, source) {
toBeAdded.hash,
lastModifiedSwcConfigTime,
isLegacyWebArch ? 'legacy' : '',
hasSwcHelpersAvailable,
]
.filter(Boolean)
.join('-');