@@ -3,25 +3,24 @@ import { CypressError, getError } from '@packages/errors'
33import type { FullConfig , TestingType } from '@packages/types'
44import { ChildProcess , fork , ForkOptions , spawn } from 'child_process'
55import EventEmitter from 'events'
6- import fs from 'fs-extra'
76import path from 'path'
87import inspector from 'inspector'
98import debugLib from 'debug'
9+ import { getTsconfig } from 'get-tsconfig'
1010import { autoBindDebug , hasTypeScriptInstalled , toPosix } from '../util'
1111import _ from 'lodash'
12- import { pathToFileURL } from 'url'
1312import os from 'os'
1413import semver from 'semver'
1514import type { OTLPTraceExporterCloud } from '@packages/telemetry'
1615import { telemetry , encodeTelemetryContext } from '@packages/telemetry'
1716
1817const pkg = require ( '@packages/root' )
1918const debug = debugLib ( `cypress:lifecycle:ProjectConfigIpc` )
19+ const debugVerbose = debugLib ( `cypress-verbose:lifecycle:ProjectConfigIpc` )
2020
2121const CHILD_PROCESS_FILE_PATH = require . resolve ( '@packages/server/lib/plugins/child/require_async_child' )
2222
23- const tsNodeEsm = pathToFileURL ( require . resolve ( 'ts-node/esm/transpile-only' ) ) . href
24- const tsNode = toPosix ( require . resolve ( '@packages/server/lib/plugins/child/register_ts_node' ) )
23+ const tsx = toPosix ( require . resolve ( 'tsx' ) )
2524
2625export type IpcHandler = ( ipc : ProjectConfigIpc ) => void
2726
@@ -250,10 +249,11 @@ export class ProjectConfigIpc extends EventEmitter {
250249
251250 private forkConfigProcess ( ) {
252251 const configProcessArgs = [ '--projectRoot' , this . projectRoot , '--file' , this . configFilePath ]
253- // allow the use of ts-node in subprocesses tests by removing the env constant from it
252+ // allow the use of tsx in subprocesses tests by removing the env constant from it
254253 // without this line, packages/ts/register.js never registers the ts-node module for config and
255254 // run_plugins can't use the config module.
256- const env = _ . omit ( process . env , 'CYPRESS_INTERNAL_E2E_TESTING_SELF' )
255+ // we also do not want telemetry enabled within our cy-in-cy tests as it isn't configured to handled it
256+ const env = _ . omit ( process . env , 'CYPRESS_INTERNAL_E2E_TESTING_SELF' , 'CYPRESS_INTERNAL_ENABLE_TELEMETRY' )
257257
258258 env . NODE_OPTIONS = process . env . ORIGINAL_NODE_OPTIONS || ''
259259
@@ -273,80 +273,60 @@ export class ProjectConfigIpc extends EventEmitter {
273273
274274 debug ( 'fork child process %o' , { CHILD_PROCESS_FILE_PATH , configProcessArgs, childOptions : _ . omit ( childOptions , 'env' ) } )
275275
276- let isProjectUsingESModules = false
276+ if ( ! childOptions . env ) {
277+ childOptions . env = { }
278+ }
277279
278- try {
279- // TODO: convert this to async FS methods
280- // eslint-disable-next-line no-restricted-syntax
281- const pkgJson = fs . readJsonSync ( path . join ( this . projectRoot , 'package.json' ) )
280+ // use for 20.6.0 and above
281+ let tsxLoader = `--import ${ tsx }
282282
283- isProjectUsingESModules = pkgJson . type === 'module'
284- } catch ( e ) {
285- // project does not have `package.json` or it was not found
286- // reasonable to assume not using es modules
283+ // @see https://tsx.is/dev-api/node-cli#node-js-cli
284+ if ( this . nodeVersion && semver . lte ( this . nodeVersion , '20.5.1' ) ) {
285+ debug ( `detected node version ${ this . nodeVersion } . Using deprecated "--loader" flag.` )
286+ tsxLoader = `--loader ${ tsx } `
287287 }
288288
289- if ( ! childOptions . env ) {
290- childOptions . env = { }
289+ // in nodejs 22.7.0, the --experimental-detect-module option is now enabled by default.
290+ // We need to disable it with the --no-experimental-detect-module flag.
291+ // @see https://github.com/cypress-io/cypress/issues/30084
292+ if ( this . nodeVersion && semver . gte ( this . nodeVersion , '22.7.0' ) ) {
293+ debug ( `detected node version ${ this . nodeVersion } )
294+ tsxLoader = `${ tsxLoader }
295+ }
296+
297+ // in nodejs 22.12.0, the --experimental-require-module option is now enabled by default.
298+ // We need to disable it with the --no-experimental-require-module flag.
299+ // @see https://github.com/cypress-io/cypress/issues/30715
300+ if ( this . nodeVersion && semver . gte ( this . nodeVersion , '22.12.0' ) ) {
301+ debug ( `detected node version ${ this . nodeVersion } )
302+ tsxLoader = `${ tsxLoader }
291303 }
292304
293- // If they've got TypeScript installed, we can use
294- // ts-node for CommonJS
295- // ts-node/esm for ESM
296- if ( hasTypeScriptInstalled ( this . projectRoot ) ) {
305+ // If they've got TypeScript installed, we can use tsx for CommonJS and ESM.
306+ // @see https://tsx.is/dev-api/node-cli#node-js-cli
307+ const hasTs = hasTypeScriptInstalled ( this . projectRoot )
308+
309+ if ( hasTs ) {
297310 debug ( 'found typescript in %s' , this . projectRoot )
298- if ( isProjectUsingESModules ) {
299- debug ( `using --experimental-specifier-resolution=node with --loader ${ tsNodeEsm } )
300- // Use the ts-node/esm loader so they can use TypeScript with `"type": "module".
301- // The loader API is experimental and will change.
302- // The same can be said for the other alternative, esbuild, so this is the
303- // best option that leverages the existing modules we bundle in the binary.
304- // @see ts-node esm loader https://typestrong.org/ts-node/docs/usage/#node-flags-and-other-tools
305- // @see Node.js Loader API https://nodejs.org/api/esm.html#customizing-esm-specifier-resolution-algorithm
306- let tsNodeEsmLoader = `--experimental-specifier-resolution=node --loader ${ tsNodeEsm }
307-
308- // in nodejs 22.7.0, the --experimental-detect-module option is now enabled by default.
309- // We need to disable it with the --no-experimental-detect-module flag.
310- // @see https://github.com/cypress-io/cypress/issues/30084
311- if ( this . nodeVersion && semver . gte ( this . nodeVersion , '22.7.0' ) ) {
312- debug ( `detected node version ${ this . nodeVersion } )
313- tsNodeEsmLoader = `${ tsNodeEsmLoader }
314- }
315-
316- // in nodejs 22.12.0, the --experimental-require-module option is now enabled by default.
317- // We need to disable it with the --no-experimental-require-module flag.
318- // @see https://github.com/cypress-io/cypress/issues/30715
319- if ( this . nodeVersion && semver . gte ( this . nodeVersion , '22.12.0' ) ) {
320- debug ( `detected node version ${ this . nodeVersion } )
321- tsNodeEsmLoader = `${ tsNodeEsmLoader }
322- }
323-
324- if ( childOptions . env . NODE_OPTIONS ) {
325- childOptions . env . NODE_OPTIONS += ` ${ tsNodeEsmLoader }
326- } else {
327- childOptions . env . NODE_OPTIONS = tsNodeEsmLoader
328- }
311+
312+ const tsConfigIfExists = getTsconfig ( this . projectRoot )
313+
314+ if ( tsConfigIfExists ) {
315+ debug ( `tsconfig.json found at ${ tsConfigIfExists . path } )
316+ childOptions . env . TSX_TSCONFIG_PATH = tsConfigIfExists . path
317+
318+ debugVerbose ( `tsconfig.json parsed as follows: %o` , tsConfigIfExists . config )
329319 } else {
330- // Not using ES Modules (via "type": "module"),
331- // so we just register the standard ts-node module
332- // to handle TypeScript that is compiled to CommonJS.
333- // We do NOT use the `--loader` flag because we have some additional
334- // custom logic for ts-node when used with CommonJS that needs to be evaluated
335- // so we need to load and evaluate the hook first using the `--require` module API.
336- const tsNodeLoader = `--require "${ tsNode }
337-
338- debug ( `using cjs with --require ${ tsNode } )
339-
340- if ( childOptions . env . NODE_OPTIONS ) {
341- childOptions . env . NODE_OPTIONS += ` ${ tsNodeLoader }
342- } else {
343- childOptions . env . NODE_OPTIONS = tsNodeLoader
344- }
320+ debug ( `No tsconfig.json found! Attempting to parse file without tsconfig.json.` )
345321 }
322+ }
323+
324+ debug ( `using generic ${ tsxLoader } ${ hasTs ? 'with typescript' : '' } )
325+
326+ if ( childOptions . env . NODE_OPTIONS ) {
327+ childOptions . env . NODE_OPTIONS += ` ${ tsxLoader }
346328 } else {
347- // Just use Node's built-in ESM support.
348- // TODO: Consider using userland `esbuild` with Node's --loader API to handle ESM.
349- debug ( `no typescript found, just use regular Node.js` )
329+ childOptions . env . NODE_OPTIONS = tsxLoader
350330 }
351331
352332 const telemetryCtx = encodeTelemetryContext ( { context : telemetry . getActiveContextObject ( ) , version : pkg . version } )
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