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refactor(optimizer): await depsOptimizer.scanProcessing #11251

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Dec 8, 2022
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refactor(optimizer): await depsOptimizer.scanProcessing #11251

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87 changes: 40 additions & 47 deletions packages/vite/src/node/optimizer/optimizer.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -161,17 +161,12 @@ async function createDepsOptimizer(
let firstRunCalled = !!cachedMetadata

let postScanOptimizationResult: Promise<DepOptimizationResult> | undefined
let discoverProjectDependenciesPromise:
| Promise<Record<string, string>>
| undefined

let optimizingNewDeps: Promise<DepOptimizationResult> | undefined
async function close() {
closed = true
await Promise.allSettled([
discoverProjectDependenciesPromise?.catch(() => {
/* ignore error for scanner because it's not important */
}),
depsOptimizer.scanProcessing,
postScanOptimizationResult,
optimizingNewDeps,
])
Expand Down Expand Up @@ -203,52 +198,50 @@ async function createDepsOptimizer(

if (!isBuild) {
// Important, the scanner is dev only
const scanPhaseProcessing = newDepOptimizationProcessing()
depsOptimizer.scanProcessing = scanPhaseProcessing.promise
// Ensure server listen is called before the scanner
setTimeout(async () => {
try {
debug(colors.green(`scanning for dependencies...`))

discoverProjectDependenciesPromise =
discoverProjectDependencies(config)
const deps = await discoverProjectDependenciesPromise

debug(
colors.green(
Object.keys(deps).length > 0
? `dependencies found by scanner: ${depsLogString(
Object.keys(deps),
)}`
: `no dependencies found by scanner`,
),
)
depsOptimizer.scanProcessing = new Promise((resolve) => {
// Ensure server listen is called before the scanner
setTimeout(async () => {
try {
debug(colors.green(`scanning for dependencies...`))

const deps = await discoverProjectDependencies(config)

debug(
colors.green(
Object.keys(deps).length > 0
? `dependencies found by scanner: ${depsLogString(
Object.keys(deps),
)}`
: `no dependencies found by scanner`,
),
)

// Add these dependencies to the discovered list, as these are currently
// used by the preAliasPlugin to support aliased and optimized deps.
// This is also used by the CJS externalization heuristics in legacy mode
for (const id of Object.keys(deps)) {
if (!metadata.discovered[id]) {
addMissingDep(id, deps[id])
// Add these dependencies to the discovered list, as these are currently
// used by the preAliasPlugin to support aliased and optimized deps.
// This is also used by the CJS externalization heuristics in legacy mode
for (const id of Object.keys(deps)) {
if (!metadata.discovered[id]) {
addMissingDep(id, deps[id])
}
}
}

if (!isBuild) {
const knownDeps = prepareKnownDeps()
if (!isBuild) {
const knownDeps = prepareKnownDeps()

// For dev, we run the scanner and the first optimization
// run on the background, but we wait until crawling has ended
// to decide if we send this result to the browser or we need to
// do another optimize step
postScanOptimizationResult = runOptimizeDeps(config, knownDeps)
// For dev, we run the scanner and the first optimization
// run on the background, but we wait until crawling has ended
// to decide if we send this result to the browser or we need to
// do another optimize step
postScanOptimizationResult = runOptimizeDeps(config, knownDeps)
}
} catch (e) {
logger.error(e.message)
} finally {
resolve()
depsOptimizer.scanProcessing = undefined
}
} catch (e) {
logger.error(e.message)
} finally {
scanPhaseProcessing.resolve()
depsOptimizer.scanProcessing = undefined
}
}, 0)
}, 0)
})
}
}

Expand Down