Build Error - TS2403: Subsequent variable declarations must have the same type.

[martypowell]

Getting an error when running grunt package-dev. I can manually fix the error, but that just spits out another error.

**grunt package-dev
Running "ts:build" (ts) task
Compiling...
Using tsc v2.6.1
node_modules/@types/node/index.d.ts(73,13): error TS2403: Subsequent variable declarations must have the same type.  Variable 'require' must be of type 'Require', but here has type 'NodeRequire'.
node_modules/@types/react/index.d.ts(165,11): error TS2559: Type 'Component<P, S>' has no properties in common with type 'ComponentLifecycle<P, S>'.
typings/globals/knockout/index.d.ts(6,2): error TS2411: Property 'notifySubscribers' of type '(valueToWrite?: T, event?: string) => void' is not assignable to string index type 'KnockoutBindingHandle
r'.
typings/globals/knockout/index.d.ts(16,2): error TS2411: Property 'equalityComparer' of type '(a: any, b: any) => boolean' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(21,5): error TS2411: Property 'indexOf' of type '(searchElement: T, fromIndex?: number) => number' is not assignable to string index type 'KnockoutBindingHandler'.

typings/globals/knockout/index.d.ts(22,5): error TS2411: Property 'slice' of type '(start: number, end?: number) => T[]' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(23,5): error TS2411: Property 'splice' of type '{ (start: number): T[]; (start: number, deleteCount: number, ...items: T[]): T[]; }' is not assignable to string in
dex type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(25,5): error TS2411: Property 'pop' of type '() => T' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(26,5): error TS2411: Property 'push' of type '(...items: T[]) => void' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(27,5): error TS2411: Property 'shift' of type '() => T' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(28,5): error TS2411: Property 'unshift' of type '(...items: T[]) => number' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(29,5): error TS2411: Property 'reverse' of type '() => KnockoutObservableArray<T>' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(30,5): error TS2411: Property 'sort' of type '{ (): KnockoutObservableArray<T>; (compareFunction: (left: T, right: T) => number): KnockoutObser...' is not assignab
le to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(36,5): error TS2411: Property 'replace' of type '(oldItem: T, newItem: T) => void' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(38,5): error TS2411: Property 'remove' of type '{ (item: T): T[]; (removeFunction: (item: T) => boolean): T[]; }' is not assignable to string index type 'KnockoutB
indingHandler'.
typings/globals/knockout/index.d.ts(40,5): error TS2411: Property 'removeAll' of type '{ (items: T[]): T[]; (): T[]; }' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(43,5): error TS2411: Property 'destroy' of type '{ (item: T): void; (destroyFunction: (item: T) => boolean): void; }' is not assignable to string index type 'Knock
outBindingHandler'.
typings/globals/knockout/index.d.ts(45,5): error TS2411: Property 'destroyAll' of type '{ (items: T[]): void; (): void; }' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(60,2): error TS2411: Property 'subscribe' of type '{ (callback: (newValue: T) => void, target?: any, event?: string): KnockoutSubscription; <TEvent>...' is not ass
ignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(62,2): error TS2411: Property 'extend' of type '(requestedExtenders: { [key: string]: any; }) => KnockoutSubscribable<T>' is not assignable to string index type 'K
nockoutBindingHandler'.
typings/globals/knockout/index.d.ts(63,2): error TS2411: Property 'getSubscriptionsCount' of type '() => number' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(77,2): error TS2411: Property 'dispose' of type '() => void' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(78,2): error TS2411: Property 'isActive' of type '() => boolean' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(79,2): error TS2411: Property 'getDependenciesCount' of type '() => number' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(80,5): error TS2411: Property 'extend' of type '(requestedExtenders: { [key: string]: any; }) => KnockoutComputed<T>' is not assignable to string index type 'Knock
outBindingHandler'.
typings/globals/knockout/index.d.ts(90,5): error TS2411: Property 'extend' of type '(requestedExtenders: { [key: string]: any; }) => KnockoutObservableArray<T>' is not assignable to string index type
 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(103,2): error TS2411: Property 'peek' of type '() => T' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(104,2): error TS2411: Property 'valueHasMutated' of type '() => void' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(105,2): error TS2411: Property 'valueWillMutate' of type '() => void' is not assignable to string index type 'KnockoutBindingHandler'.
typings/globals/knockout/index.d.ts(106,5): error TS2411: Property 'extend' of type '(requestedExtenders: { [key: string]: any; }) => KnockoutObservable<T>' is not assignable to string index type 'Kn
ockoutBindingHandler'.
typings/globals/vss/index.d.ts(3247,14): error TS2559: Type 'TemplateViewModel' has no properties in common with type 'EnhancementOptions'.
typings/globals/vss/index.d.ts(9305,14): error TS2415: Class 'ComboDateBehavior' incorrectly extends base class 'BaseComboBehavior'.
  Types of property 'getValue' are incompatible.
    Type '() => Date' is not assignable to type '<TValue>() => TValue'.
      Type 'Date' is not assignable to type 'TValue'.
typings/globals/vss/index.d.ts(9385,14): error TS2415: Class 'ComboMultiValueBehavior' incorrectly extends base class 'ComboListBehavior'.
  Types of property 'getValue' are incompatible.
    Type '() => string[]' is not assignable to type '<TValue>() => TValue'.
      Type 'string[]' is not assignable to type 'TValue'.
typings/globals/vss/index.d.ts(9551,14): error TS2417: Class static side 'typeof DialogO' incorrectly extends base class static side 'typeof AjaxPanelO'.
  Types of property 'create' are incompatible.
    Type '<T extends Dialog>(dialogType: new (options: any) => T, options?: any) => T' is not assignable to type '<TControl extends Control<any>, TOptions>(controlType: new (options: TOptions) => TCo
ntrol, conta...'.
      Types of parameters 'dialogType' and 'controlType' are incompatible.
        Type 'new (options: TOptions) => TControl' is not assignable to type 'new (options: any) => Dialog'.
          Type 'TControl' is not assignable to type 'Dialog'.
            Type 'Control<any>' is not assignable to type 'Dialog'.
              Property '_title' is missing in type 'Control<any>'.

>> 34 non-emit-preventing type warnings
>> Error: tsc return code: 2
Warning: Task "ts:build" failed. Use --force to continue.

Aborted due to warnings.

[mmanela]

@ostreifel @mohitbagra can you help?

[jimNeff]

I was able to get past this with: npm install tfx-cli
then re-run grunt

[martypowell]

@jimNeff I receive the same error after doing what you suggest

[ostreifel]

this may be a typescript version error. I known a lot of things were broken after tsc version 2.3.3.
Switch to using typescript version 2.3.3

[pabrams]

@ostreifel I was getting the same error output as OP. I tried changing
"typescript": "^2.1.4",
to
"typescript": "2.3.3",
and I get different errors:

C:\Users\Paul.Abrams\Source\Repos\color-control>grunt test
Running "ts:buildTest" (ts) task
Compiling...
Using tsc v2.3.3
node_modules/@types/node/index.d.ts(89,13): error TS2403: Subsequent variable de
clarations must have the same type. Variable 'require' must be of type 'Require
', but here has type 'NodeRequire'.
node_modules/@types/node/index.d.ts(1975,45): error TS2304: Cannot find name 'It
erable'.
node_modules/@types/node/index.d.ts(1976,94): error TS2304: Cannot find name 'It
erable'.
node_modules/@types/node/index.d.ts(1979,20): error TS2304: Cannot find name 'It
erator'.
node_modules/@types/node/index.d.ts(1984,17): error TS2304: Cannot find name 'It
erator'.
node_modules/@types/node/index.d.ts(1988,19): error TS2304: Cannot find name 'It
erator'.
node_modules/@types/node/index.d.ts(1989,10): error TS2304: Cannot find name 'Sy
mbol'.
node_modules/@types/node/index.d.ts(1989,30): error TS2304: Cannot find name 'It
erator'.

8 non-emit-preventing type warnings
Error: tsc return code: 2
Warning: Task "ts:buildTest" failed. Use --force to continue.

Aborted due to warnings.

[pabrams]

Pinning to typescript 2.1.4 yields many more errors. Cannot find name 'object' in node_modules/@types/lodash

[ahmadyo]

and also:

Using tsc v2.1.4
node_modules/@types/glob/index.d.ts(17,66): error TS2304: Cannot find name 'Promise'.
node_modules/@types/jszip/index.d.ts(87,74): error TS2304: Cannot find name 'Promise'.
...
235 non-emit-preventing type warnings
Error: tsc return code: 2
Warning: Task "ts:build" failed. Use --force to continue.

Aborted due to warnings.

[mmanela]

Dupe of #15