Migration failed: Cannot read property 'Loose' of undefined

[kortgat]

🐞 Bug report

Command (mark with an x)

ng update @angular/cli --from 8 --to 9 --migrate-only

• new
• build
• serve
• test
• e2e
• generate
• add
• [ x] update
• lint
• extract-i18n
• run
• config
• help
• version
• doc

Is this a regression?

Yes, the previous version in which this bug was not present was: Migrating from angular 7 to 8

Description

** Executing migrations of package '@angular/cli' **

Replace deprecated 'styleext' and 'spec' Angular schematic options.
× Migration failed: Cannot read property 'Loose' of undefined

🔬 Minimal Reproduction

I can only reproduce it on this one project I've upgraded another angular project without any issues

🔥 Exception or Error

[error] TypeError: Cannot read property 'Loose' of undefined
    at readJsonFileAsAstObject (~\node_modules\@angular\cli\node_modules\@schematics\angular\migrations\update-9\utils.js:90:74)
    at Object.getWorkspace (~\node_modules\@angular\cli\node_modules\@schematics\angular\migrations\update-9\utils.js:77:21)
    at ~\node_modules\@angular\cli\node_modules\@schematics\angular\migrations\update-9\schematic-options.js:15:35
    at MergeMapSubscriber.project ({userDir}\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\schematics\src\rules\call.js:75:24)
    at MergeMapSubscriber._tryNext ({userDir}\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\mergeMap.js:67:27)
    at MergeMapSubscriber._next ({userDir}\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\mergeMap.js:57:18)
    at MergeMapSubscriber.Subscriber.next ({userDir}\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Subscriber.js:66:18)
    at Observable._subscribe ({userDir}\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\util\subscribeToArray.js:5:20)
    at Observable._trySubscribe ({userDir}\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:44:25)
    at Observable.subscribe ({userDir}\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:30:22)

🌍 Your Environment

Angular CLI: 10.2.3
Node: 14.18.1
OS: win32 x64

Angular: 10.2.5
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... platform-server, router
Ivy Workspace: Yes

Package                            Version
------------------------------------------------------------
@angular-devkit/architect          0.13.10
@angular-devkit/build-angular      0.1002.3
@angular-devkit/core               7.3.10
@angular-devkit/schematics         10.2.3
@angular/cdk                       10.2.7
@angular/cli                       10.2.3
@angular/material                  10.2.7
@angular/material-moment-adapter   10.2.7
@schematics/angular                7.3.10
@schematics/update                 0.13.10
rxjs                               7.4.0
typescript                         3.9.10

[alan-agius4]

Can you please try to run the below?

ng update @angular/cli@9 @angular/core@9

[kortgat]

hi I get the following

The installed local Angular CLI version is older than the latest stable version. Installing a temporary version to perform the update. ✔ Package successfully installed. Using package manager: 'npm' Collecting installed dependencies... Found 83 dependencies. Fetching dependency metadata from registry... Package '@angular/cli' is already up to date. Package '@angular/core' is already up to date.

[kortgat]

I have tried clearing npm cache, deleing node_modules, tried a different computer, skipping cli migration from 8-9 and tried running 9-10 but same issue,

looking at the file with the error "Loose" is a property of an enum so not sure why it is undefined

[alan-agius4]

What is the version of your global Angular CLI?, is it also version 9?

[kortgat]

Angular CLI: 13.0.1
Node: 14.18.1
Package Manager: npm 6.14.15
OS: win32 x64

[kortgat]

I think I will just create an angular 12/13 project and port over my logic and pages. I wanted to do an UI upgrade anyway

thanx for the willingness to help

[alan-agius4]

So using a global CLI version which is greater that the targeted version might be problematic. I suggest you install the same version globally.

Can you try the below?

npm i @angular/cli@9 -g
ng update @angular/cli --from 8 --to 9 --migrate-only

[karwank]

It doesn't help. I'm facing the same issue.

In file node_modules\@schematics\angular\migrations\update-9\utils.js is code:

const core_1 = require("@angular-devkit/core");

When I run it by ng update @angular/cli --from 8 --to 9 --migrate-only core_1 is:

{ analytics: { NgCliAnalyticsDimensions: { '1': 'CpuCount', '2': 'CpuSpeed', '3': 'RamInGigabytes', '4': 'NodeVersion', '6': 'NgAddCollection', '8': 'AotEnabled', '20': 'BuildErrors', CpuCount: 1, CpuSpeed: 2, RamInGigabytes: 3, NodeVersion: 4, NgAddCollection: 6, AotEnabled: 8, BuildErrors: 20 }, NgCliAnalyticsMetrics: { '1': 'NgComponentCount', '2': 'UNUSED_2', '3': 'UNUSED_3', '4': 'UNUSED_4', '5': 'BuildTime', '6': 'NgOnInitCount', '7': 'InitialChunkSize', '8': 'TotalChunkCount', '9': 'TotalChunkSize', '10': 'LazyChunkCount', '11': 'LazyChunkSize', '12': 'AssetCount', '13': 'AssetSize', '14': 'PolyfillSize', '15': 'CssSize', NgComponentCount: 1, UNUSED_2: 2, UNUSED_3: 3, UNUSED_4: 4, BuildTime: 5, NgOnInitCount: 6, InitialChunkSize: 7, TotalChunkCount: 8, TotalChunkSize: 9, LazyChunkCount: 10, LazyChunkSize: 11, AssetCount: 12, AssetSize: 13, PolyfillSize: 14, CssSize: 15 }, NgCliAnalyticsDimensionsFlagInfo: { CpuCount: [Array], CpuSpeed: [Array], RamInGigabytes: [Array], NodeVersion: [Array], NgAddCollection: [Array], AotEnabled: [Array], BuildErrors: [Array] }, NgCliAnalyticsMetricsFlagInfo: { NgComponentCount: [Array], UNUSED_2: [Array], UNUSED_3: [Array], UNUSED_4: [Array], BuildTime: [Array], NgOnInitCount: [Array], InitialChunkSize: [Array], TotalChunkCount: [Array], TotalChunkSize: [Array], LazyChunkCount: [Array], LazyChunkSize: [Array], AssetCount: [Array], AssetSize: [Array], PolyfillSize: [Array], CssSize: [Array] }, AnalyticsReportKind: [Getter], ForwardingAnalytics: [Getter], AnalyticsReporter: [Getter], LoggingAnalytics: [Getter], MultiAnalytics: [Getter], NoopAnalytics: [Getter] }, experimental: { jobs: { JobInboundMessageKind: [Getter], JobOutboundMessageKind: [Getter], JobState: [Getter], isJobHandler: [Getter], ChannelAlreadyExistException: [Getter], createJobHandler: [Getter], createJobFactory: [Getter], createLoggerJob: [Getter], JobNameAlreadyRegisteredException: [Getter], JobDoesNotExistException: [Getter], createDispatcher: [Getter], FallbackRegistry: [Getter], SimpleJobRegistry: [Getter], JobArgumentSchemaValidationError: [Getter], JobInboundMessageSchemaValidationError: [Getter], JobOutputSchemaValidationError: [Getter], SimpleScheduler: [Getter], strategy: [Getter] } }, json: { schema: { transforms: [Object], buildJsonPointer: [Getter], joinJsonPointer: [Getter], parseJsonPointer: [Getter], SchemaValidationException: [Getter], CoreSchemaRegistry: [Getter], isJsonSchema: [Getter], mergeSchemas: [Getter], visitJson: [Getter], visitJsonSchema: [Getter], getTypesOfSchema: [Getter] }, isJsonObject: [Getter], isJsonArray: [Getter] }, logging: { IndentLogger: [Getter], LevelTransformLogger: [Getter], LevelCapLogger: [Getter], Logger: [Getter], NullLogger: [Getter], TransformLogger: [Getter] }, workspaces: { createWorkspaceHost: [Getter], WorkspaceFormat: [Getter], readWorkspace: [Getter], writeWorkspace: [Getter], ProjectDefinitionCollection: [Getter], TargetDefinitionCollection: [Getter] }, BaseException: [Getter], UnknownException: [Getter], FileDoesNotExistException: [Getter], FileAlreadyExistException: [Getter], PathIsDirectoryException: [Getter], PathIsFileException: [Getter], ContentHasMutatedException: [Getter], InvalidUpdateRecordException: [Getter], MergeConflictException: [Getter], UnimplementedException: [Getter], UnsupportedPlatformException: [Getter], schema: [Getter], isJsonObject: [Getter], isJsonArray: [Getter], tags: [Getter], strings: [Getter], clean: [Getter], mapObject: [Getter], deepCopy: [Getter], templateParser: [Getter], template: [Getter], DependencyNotFoundException: [Getter], CircularDependencyFoundException: [Getter], PartiallyOrderedSet: [Getter], PriorityQueue: [Getter], isPromise: [Getter], virtualFs: [Getter], InvalidPathException: [Getter], PathMustBeAbsoluteException: [Getter], PathCannotBeFragmentException: [Getter], NormalizedSep: [Getter], NormalizedRoot: [Getter], split: [Getter], extname: [Getter], basename: [Getter], dirname: [Getter], join: [Getter], isAbsolute: [Getter], relative: [Getter], resolve: [Getter], fragment: [Getter], resetNormalizeCache: [Getter], normalize: [Getter], noCacheNormalize: [Getter], path: [Getter], asWindowsPath: [Getter], asPosixPath: [Getter], getSystemPath: [Getter] }

I create my own file in main directory which content:

const core_1 = require("@angular-devkit/core") console.log(core_1);

It produces:

{
analytics: {
AnalyticsReportKind: {
Event: 'event',
Screenview: 'screenview',
Pageview: 'pageview',
Timing: 'timing'
},
ForwardingAnalytics: [class ForwardingAnalytics],
AnalyticsReporter: [class AnalyticsReporter],
LoggingAnalytics: [class LoggingAnalytics],
MultiAnalytics: [class MultiAnalytics],
NoopAnalytics: [class NoopAnalytics],
NgCliAnalyticsDimensions: {
'1': 'CpuCount',
'2': 'CpuSpeed',
'3': 'RamInGigabytes',
'4': 'NodeVersion',
'6': 'NgAddCollection',
'7': 'NgBuildBuildEventLog',
'8': 'NgIvyEnabled',
'20': 'BuildErrors',
CpuCount: 1,
CpuSpeed: 2,
RamInGigabytes: 3,
NodeVersion: 4,
NgAddCollection: 6,
NgBuildBuildEventLog: 7,
NgIvyEnabled: 8,
BuildErrors: 20
},
NgCliAnalyticsMetrics: {
'1': 'NgComponentCount',
'2': 'UNUSED_2',
'3': 'UNUSED_3',
'4': 'UNUSED_4',
'5': 'BuildTime',
'6': 'NgOnInitCount',
'7': 'InitialChunkSize',
'8': 'TotalChunkCount',
'9': 'TotalChunkSize',
'10': 'LazyChunkCount',
'11': 'LazyChunkSize',
'12': 'AssetCount',
'13': 'AssetSize',
'14': 'PolyfillSize',
'15': 'CssSize',
NgComponentCount: 1,
UNUSED_2: 2,
UNUSED_3: 3,
UNUSED_4: 4,
BuildTime: 5,
NgOnInitCount: 6,
InitialChunkSize: 7,
TotalChunkCount: 8,
TotalChunkSize: 9,
LazyChunkCount: 10,
LazyChunkSize: 11,
AssetCount: 12,
AssetSize: 13,
PolyfillSize: 14,
CssSize: 15
},
NgCliAnalyticsDimensionsFlagInfo: {
CpuCount: [Array],
CpuSpeed: [Array],
RamInGigabytes: [Array],
NodeVersion: [Array],
NgAddCollection: [Array],
NgBuildBuildEventLog: [Array],
NgIvyEnabled: [Array],
BuildErrors: [Array]
},
NgCliAnalyticsMetricsFlagInfo: {
NgComponentCount: [Array],
UNUSED_2: [Array],
UNUSED_3: [Array],
UNUSED_4: [Array],
BuildTime: [Array],
NgOnInitCount: [Array],
InitialChunkSize: [Array],
TotalChunkCount: [Array],
TotalChunkSize: [Array],
LazyChunkCount: [Array],
LazyChunkSize: [Array],
AssetCount: [Array],
AssetSize: [Array],
PolyfillSize: [Array],
CssSize: [Array]
}
},
experimental: {
jobs: {
JobInboundMessageKind: [Object],
JobOutboundMessageKind: [Object],
JobState: [Object],
isJobHandler: [Function: isJobHandler],
ChannelAlreadyExistException: [class ChannelAlreadyExistException extends BaseException],
createJobHandler: [Function: createJobHandler],
createJobFactory: [Function: createJobFactory],
createLoggerJob: [Function: createLoggerJob],
JobNameAlreadyRegisteredException: [class JobNameAlreadyRegisteredException extends BaseException],
JobDoesNotExistException: [class JobDoesNotExistException extends BaseException],
createDispatcher: [Function: createDispatcher],
FallbackRegistry: [class FallbackRegistry],
SimpleJobRegistry: [class SimpleJobRegistry],
JobArgumentSchemaValidationError: [class JobArgumentSchemaValidationError extends SchemaValidationException],
JobInboundMessageSchemaValidationError: [class JobInboundMessageSchemaValidationError extends SchemaValidationException],
JobOutputSchemaValidationError: [class JobOutputSchemaValidationError extends SchemaValidationException],
SimpleScheduler: [class SimpleScheduler],
strategy: [Object]
},
workspace: {
WorkspaceFileNotFoundException: [class WorkspaceFileNotFoundException extends BaseException],
ProjectNotFoundException: [class ProjectNotFoundException extends BaseException],
WorkspaceToolNotFoundException: [class WorkspaceToolNotFoundException extends BaseException],
ProjectToolNotFoundException: [class ProjectToolNotFoundException extends BaseException],
WorkspaceNotYetLoadedException: [class WorkspaceNotYetLoadedException extends BaseException],
AmbiguousProjectPathException: [class AmbiguousProjectPathException extends BaseException],
Workspace: [Function]
}
},
json: {
isJsonObject: [Function: isJsonObject],
isJsonArray: [Function: isJsonArray],
JsonException: [class JsonException extends BaseException],
InvalidJsonCharacterException: [class InvalidJsonCharacterException extends JsonException],
UnexpectedEndOfInputException: [class UnexpectedEndOfInputException extends JsonException],
PathSpecificJsonException: [class PathSpecificJsonException extends JsonException],
JsonParseMode: {
'0': 'Json',
'1': 'CommentsAllowed',
'2': 'SingleQuotesAllowed',
'4': 'IdentifierKeyNamesAllowed',
'8': 'TrailingCommasAllowed',
'16': 'HexadecimalNumberAllowed',
'32': 'MultiLineStringAllowed',
'64': 'LaxNumberParsingAllowed',
'128': 'NumberConstantsAllowed',
'255': 'Json5',
Strict: 0,
CommentsAllowed: 1,
SingleQuotesAllowed: 2,
IdentifierKeyNamesAllowed: 4,
TrailingCommasAllowed: 8,
HexadecimalNumberAllowed: 16,
MultiLineStringAllowed: 32,
LaxNumberParsingAllowed: 64,
NumberConstantsAllowed: 128,
Default: 0,
Loose: 255,
Json: 0,
Json5: 255
},
parseJsonAst: [Function: parseJsonAst],
parseJson: [Function: parseJson],
schema: {
buildJsonPointer: [Function: buildJsonPointer],
joinJsonPointer: [Function: joinJsonPointer],
parseJsonPointer: [Function: parseJsonPointer],
SchemaValidationException: [class SchemaValidationException extends BaseException],
CoreSchemaRegistry: [class CoreSchemaRegistry],
isJsonSchema: [Function: isJsonSchema],
mergeSchemas: [Function: mergeSchemas],
visitJson: [Function: visitJson],
visitJsonSchema: [Function: visitJsonSchema],
getTypesOfSchema: [Function: getTypesOfSchema],
transforms: [Object]
}
},
logging: {
IndentLogger: [class IndentLogger extends Logger],
LevelTransformLogger: [class LevelTransformLogger extends Logger],
LevelCapLogger: [class LevelCapLogger extends LevelTransformLogger] {
levelMap: [Object]
},
Logger: [class Logger extends Observable],
NullLogger: [class NullLogger extends Logger],
TransformLogger: [class TransformLogger extends Logger]
},
workspaces: {
ProjectDefinitionCollection: [class ProjectDefinitionCollection extends DefinitionCollection],
TargetDefinitionCollection: [class TargetDefinitionCollection extends DefinitionCollection],
createWorkspaceHost: [Function: createWorkspaceHost],
WorkspaceFormat: { '0': 'JSON', JSON: 0 },
readWorkspace: [AsyncFunction: readWorkspace],
writeWorkspace: [AsyncFunction: writeWorkspace]
},
BaseException: [class BaseException extends Error],
UnknownException: [class UnknownException extends BaseException],
FileDoesNotExistException: [class FileDoesNotExistException extends BaseException],
FileAlreadyExistException: [class FileAlreadyExistException extends BaseException],
PathIsDirectoryException: [class PathIsDirectoryException extends BaseException],
PathIsFileException: [class PathIsFileException extends BaseException],
ContentHasMutatedException: [class ContentHasMutatedException extends BaseException],
InvalidUpdateRecordException: [class InvalidUpdateRecordException extends BaseException],
MergeConflictException: [class MergeConflictException extends BaseException],
UnimplementedException: [class UnimplementedException extends BaseException],
UnsupportedPlatformException: [class UnsupportedPlatformException extends BaseException],
isJsonObject: [Function: isJsonObject],
isJsonArray: [Function: isJsonArray],
JsonException: [class JsonException extends BaseException],
InvalidJsonCharacterException: [class InvalidJsonCharacterException extends JsonException],
UnexpectedEndOfInputException: [class UnexpectedEndOfInputException extends JsonException],
PathSpecificJsonException: [class PathSpecificJsonException extends JsonException],
JsonParseMode: {
'0': 'Json',
'1': 'CommentsAllowed',
'2': 'SingleQuotesAllowed',
'4': 'IdentifierKeyNamesAllowed',
'8': 'TrailingCommasAllowed',
'16': 'HexadecimalNumberAllowed',
'32': 'MultiLineStringAllowed',
'64': 'LaxNumberParsingAllowed',
'128': 'NumberConstantsAllowed',
'255': 'Json5',
Strict: 0,
CommentsAllowed: 1,
SingleQuotesAllowed: 2,
IdentifierKeyNamesAllowed: 4,
TrailingCommasAllowed: 8,
HexadecimalNumberAllowed: 16,
MultiLineStringAllowed: 32,
LaxNumberParsingAllowed: 64,
NumberConstantsAllowed: 128,
Default: 0,
Loose: 255,
Json: 0,
Json5: 255
},
parseJsonAst: [Function: parseJsonAst],
parseJson: [Function: parseJson],
schema: {
buildJsonPointer: [Function: buildJsonPointer],
joinJsonPointer: [Function: joinJsonPointer],
parseJsonPointer: [Function: parseJsonPointer],
SchemaValidationException: [class SchemaValidationException extends BaseException],
CoreSchemaRegistry: [class CoreSchemaRegistry],
isJsonSchema: [Function: isJsonSchema],
mergeSchemas: [Function: mergeSchemas],
visitJson: [Function: visitJson],
visitJsonSchema: [Function: visitJsonSchema],
getTypesOfSchema: [Function: getTypesOfSchema],
transforms: { addUndefinedDefaults: [Function: addUndefinedDefaults] }
},
tags: {
oneLine: [Function: oneLine],
indentBy: [Function: indentBy],
stripIndent: [Function: stripIndent],
stripIndents: [Function: stripIndents],
trimNewlines: [Function: trimNewlines]
},
strings: {
decamelize: [Function: decamelize],
dasherize: [Function: dasherize],
camelize: [Function: camelize],
classify: [Function: classify],
underscore: [Function: underscore],
capitalize: [Function: capitalize],
levenshtein: [Function: levenshtein]
},
clean: [Function: clean],
mapObject: [Function: mapObject],
deepCopy: [Function: deepCopy],
templateParser: [Function: templateParser],
template: [Function: template],
DependencyNotFoundException: [class DependencyNotFoundException extends BaseException],
CircularDependencyFoundException: [class CircularDependencyFoundException extends BaseException],
PartiallyOrderedSet: [class PartiallyOrderedSet],
PriorityQueue: [class PriorityQueue],
isPromise: [Function: isPromise],
isObservable: [Function: isObservable],
InvalidPathException: [class InvalidPathException extends BaseException],
PathMustBeAbsoluteException: [class PathMustBeAbsoluteException extends BaseException],
PathCannotBeFragmentException: [class PathCannotBeFragmentException extends BaseException],
NormalizedSep: '/',
NormalizedRoot: '/',
split: [Function: split],
extname: [Function: extname],
basename: [Function: basename],
dirname: [Function: dirname],
join: [Function: join],
isAbsolute: [Function: isAbsolute],
relative: [Function: relative],
resolve: [Function: resolve],
fragment: [Function: fragment],
resetNormalizeCache: [Function: resetNormalizeCache],
normalize: [Function: normalize],
noCacheNormalize: [Function: noCacheNormalize],
path: [Function],
asWindowsPath: [Function: asWindowsPath],
asPosixPath: [Function: asPosixPath],
getSystemPath: [Function: getSystemPath],
virtualFs: {
AliasHost: [class AliasHost extends ResolverHost],
stringToFileBuffer: [Function: stringToFileBuffer],
fileBuffer: [Function],
fileBufferToString: [Function: fileBufferToString],
Empty: [class Empty],
SimpleMemoryHost: [class SimpleMemoryHost],
PatternMatchingHost: [class PatternMatchingHost extends ResolverHost],
CordHost: [class CordHost extends SimpleMemoryHost],
SafeReadonlyHost: [class SafeReadonlyHost],
ScopedHost: [class ScopedHost extends ResolverHost],
SynchronousDelegateExpectedException: [class SynchronousDelegateExpectedException extends BaseException],
SyncDelegateHost: [class SyncDelegateHost],
ResolverHost: [class ResolverHost],
test: { TestHost: [class TestHost extends SimpleMemoryHost] }
},
terminal: {
reset: [Function],
bold: [Function],
dim: [Function],
italic: [Function],
underline: [Function],
inverse: [Function],
hidden: [Function],
strikethrough: [Function],
black: [Function],
red: [Function],
green: [Function],
yellow: [Function],
blue: [Function],
magenta: [Function],
cyan: [Function],
white: [Function],
grey: [Function],
gray: [Function],
bgBlack: [Function],
bgRed: [Function],
bgGreen: [Function],
bgYellow: [Function],
bgBlue: [Function],
bgMagenta: [Function],
bgCyan: [Function],
bgWhite: [Function],
getCapabilities: [Function: getCapabilities],
colors: {
reset: [Function],
bold: [Function],
dim: [Function],
italic: [Function],
underline: [Function],
inverse: [Function],
hidden: [Function],
strikethrough: [Function],
black: [Function],
red: [Function],
green: [Function],
yellow: [Function],
blue: [Function],
magenta: [Function],
cyan: [Function],
white: [Function],
grey: [Function],
gray: [Function],
bgBlack: [Function],
bgRed: [Function],
bgGreen: [Function],
bgYellow: [Function],
bgBlue: [Function],
bgMagenta: [Function],
bgCyan: [Function],
bgWhite: [Function]
}
}
}


JsonParseMode is present in second structure, but is not in the first one. I don't know why. I work on the same version of @angular-devkit/core package.

[karwank]

I discovered that when I run ng update @angular/cli --from 8 --to 9 --migrate-only in /tmp is being created temporary directory angular-cli-packages-******* which includes package.json:
{"name":"temp-cli-install","description":"temp-cli-install","repository":"temp-cli-install","license":"MIT"}

and direcotry node_modules. There is added package @angular-devkit/core in "version": "13.0.1"

As I understand the newest version of @angular-devkit/core is not compatible with migration instructions from @schematics/angular/migrations/update-9

[alan-agius4]

I was able to replicate this issue. As a workaround you can use the following command.

NG_DISABLE_VERSION_CHECK=1 ./node_modules/.bin/ng update @angular/cli --from 8 --to 9 --migrate-only