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feat: add traceWithNft feature flag #769

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merged 5 commits into from
Oct 25, 2021
Merged

feat: add traceWithNft feature flag #769

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68458cc
feat: add aws-sdk to NFT ignore
eduardoboucas Oct 25, 2021
e5f300e
feat: add traceWithNft flag
eduardoboucas Oct 25, 2021
3039ab3
fix: make path Windows-friendly
eduardoboucas Oct 25, 2021
b86371a
fix: make ignore function compatible with Windows paths
eduardoboucas Oct 25, 2021
b373cab
refactor: adjust ignore glob
eduardoboucas Oct 25, 2021
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1 change: 1 addition & 0 deletions src/feature_flags.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ const FLAGS: Record<string, boolean> = {
buildRustSource: Boolean(env.NETLIFY_EXPERIMENTAL_BUILD_RUST_SOURCE),
defaultEsModulesToEsbuild: Boolean(env.NETLIFY_EXPERIMENTAL_DEFAULT_ES_MODULES_TO_ESBUILD),
parseWithEsbuild: false,
traceWithNft: false,
}

type FeatureFlag = keyof typeof FLAGS
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15 changes: 14 additions & 1 deletion src/runtimes/node/bundlers/nft/index.ts
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Expand Up @@ -2,6 +2,8 @@ import { basename, dirname, join, normalize, resolve } from 'path'

import { nodeFileTrace } from '@vercel/nft'
import resolveDependency from '@vercel/nft/out/resolve-dependency'
import minimatch from 'minimatch'
import unixify from 'unixify'

import type { BundleFunction } from '..'
import type { FunctionConfig } from '../../../../config'
Expand All @@ -12,6 +14,9 @@ import { filterExcludedPaths, getPathsOfIncludedFiles } from '../../utils/includ

import { transpileMany } from './transpile'

// Paths that will be excluded from the tracing process.
const ignore = ['node_modules/aws-sdk/**']

interface NftCache {
analysisCache?: Map<string, { isESM: boolean; [key: string]: unknown }>
[key: string]: unknown
Expand Down Expand Up @@ -54,6 +59,13 @@ const bundle: BundleFunction = async ({
}
}

const ignoreFunction = (path: string) => {
const normalizedPath = unixify(path)
const shouldIgnore = ignore.some((expression) => minimatch(normalizedPath, expression))

return shouldIgnore
}

const traceFilesAndTranspile = async function ({
basePath,
config,
Expand All @@ -70,6 +82,7 @@ const traceFilesAndTranspile = async function ({
const { fileList: dependencyPaths } = await nodeFileTrace([mainFile], {
base: basePath,
cache,
ignore: ignoreFunction,
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@Skn0tt Skn0tt Jun 27, 2023 •
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Just stumbled across this a millennia later. I see we're passing a custom ignoreFunction here that ends up doing glob matching. NFT docs say that you can pass an array of globs here, instead: https://github.com/vercel/nft/blob/314fd539335002273e77ba20d9832042af2a0bab/readme.md?plain=1#L166

What was the reasons against doing that? Is there a perf improvement / optimisation we could get from using an array here?

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No idea, to be honest. Maybe it had to do with cross-OS path normalisation (since I see unixify in there)? Or maybe the array option wasn't available at the time (or I simply didn't realise it was)?

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It was available at the time - introduced in a commit named "first commit" :D vercel/nft@31d836e

I'll try replacing this function with an array in a different PR. If that doesn't break our tests (i'll check if we have one) then let's use the array instead.

readFile: async (path: string) => {
try {
const source = (await cachedReadFile(fsCache, path, 'utf8')) as string
Expand Down Expand Up @@ -136,7 +149,7 @@ const getSrcFiles: GetSrcFilesFunction = async function ({ basePath, config, mai
includedFiles,
includedFilesBasePath,
)
const { fileList: dependencyPaths } = await nodeFileTrace([mainFile], { base: basePath })
const { fileList: dependencyPaths } = await nodeFileTrace([mainFile], { base: basePath, ignore: ignoreFunction })
const normalizedDependencyPaths = dependencyPaths.map((path) => (basePath ? resolve(basePath, path) : resolve(path)))
const includedPaths = filterExcludedPaths([...normalizedDependencyPaths, ...includedFilePaths], excludedPaths)

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8 changes: 7 additions & 1 deletion src/runtimes/node/index.ts
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Expand Up @@ -23,11 +23,17 @@ const getDefaultBundler = async ({
mainFile: string
featureFlags: FeatureFlags
}): Promise<NodeBundlerName> => {
const { defaultEsModulesToEsbuild, traceWithNft } = featureFlags

if (['.mjs', '.ts'].includes(extension)) {
return 'esbuild'
}

if (featureFlags.defaultEsModulesToEsbuild) {
if (traceWithNft) {
return 'nft'
}

if (defaultEsModulesToEsbuild) {
const isEsModule = await detectEsModule({ mainFile })

if (isEsModule) {
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2 changes: 1 addition & 1 deletion tests/helpers/test_many.js
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Expand Up @@ -46,7 +46,7 @@ const makeTestMany = (test, matrix) => {

const rateLimitedTestFn = getRateLimitedTestFunction(testFn)

rateLimitedTestFn(testTitle, assertions.bind(null, variation))
rateLimitedTestFn(testTitle, assertions.bind(null, variation), name)
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})
}

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