[Home](./index.md) > [@datashaper/schema](./schema.md) > [Step](./schema.step.md) ## Step type Specification for step items Signature: ```typescript export type Step = StepJsonCommon & (({ verb: Verb.Aggregate; args?: AggregateArgs; } & BasicInput) | ({ verb: Verb.Bin; args?: BinArgs; } & BasicInput) | ({ verb: Verb.Binarize; args?: BinarizeArgs; } & BasicInput) | ({ verb: Verb.Boolean; args?: BooleanArgs; } & BasicInput) | ({ verb: Verb.Concat; } & VariadicInput) | ({ verb: Verb.Convert; args?: ConvertArgs; } & BasicInput) | ({ verb: Verb.Copy; args?: CopyArgs; } & BasicInput) | ({ verb: Verb.Dedupe; args?: DedupeArgs; } & BasicInput) | ({ verb: Verb.Derive; args?: DeriveArgs; } & BasicInput) | ({ verb: Verb.Difference; } & VariadicInput) | ({ verb: Verb.Decode; args?: EncodeDecodeArgs; } & BasicInput) | ({ verb: Verb.Drop; args?: DropArgs; } & BasicInput) | ({ verb: Verb.Encode; args?: EncodeDecodeArgs; } & BasicInput) | ({ verb: Verb.Erase; args?: EraseArgs; } & BasicInput) | ({ verb: Verb.Fill; args?: FillArgs; } & BasicInput) | ({ verb: Verb.Filter; args?: FilterArgs; } & BasicInput) | ({ verb: Verb.Fold; args?: FoldArgs; } & BasicInput) | ({ verb: Verb.Groupby; args?: GroupbyArgs; } & BasicInput) | ({ verb: Verb.Impute; args?: ImputeArgs; } & BasicInput) | ({ verb: Verb.Intersect; } & VariadicInput) | ({ verb: Verb.Join; args?: JoinArgs; } & DualInput) | ({ verb: Verb.Lookup; args?: LookupArgs; } & DualInput) | ({ verb: Verb.Merge; args?: MergeArgs; } & BasicInput) | ({ verb: Verb.Print; args?: PrintArgs; } & BasicInput) | ({ verb: Verb.Onehot; args?: OnehotArgs; } & BasicInput) | ({ verb: Verb.Orderby; args?: OrderbyArgs; } & BasicInput) | ({ verb: Verb.Pivot; args?: PivotArgs; } & BasicInput) | ({ verb: Verb.Recode; args?: RecodeArgs; } & BasicInput) | ({ verb: Verb.Rename; args?: RenameArgs; } & BasicInput) | ({ verb: Verb.Rollup; args?: RollupArgs; } & BasicInput) | ({ verb: Verb.Sample; args?: SampleArgs; } & BasicInput) | ({ verb: Verb.Select; args?: SelectArgs; } & BasicInput) | ({ verb: Verb.Spread; args?: SpreadArgs; } & BasicInput) | ({ verb: Verb.Destructure; args?: DestructureArgs; } & BasicInput) | ({ verb: Verb.StringsReplace; args?: StringsReplaceArgs; } & BasicInput) | ({ verb: Verb.StringsLower; args?: StringsArgs; } & BasicInput) | ({ verb: Verb.StringsUpper; args?: StringsArgs; } & BasicInput) | ({ verb: Verb.Unfold; args?: UnfoldArgs; } & BasicInput) | ({ verb: Verb.Ungroup; } & BasicInput) | ({ verb: Verb.Unhot; args?: UnhotArgs; } & BasicInput) | ({ verb: Verb.Union; } & VariadicInput) | ({ verb: Verb.Unorder; } & BasicInput) | ({ verb: Verb.Unroll; args?: UnrollArgs; } & BasicInput) | ({ verb: Verb.Window; args?: WindowArgs; } & BasicInput) | ({ verb: Verb.Workflow; args?: WorkflowArgs; } & BasicInput) /** * Custom step - we may not know the verb, args, or binding pattern */ | ({ verb: string; args?: unknown; } & UnknownInput)); ``` References: [StepJsonCommon](./schema.stepjsoncommon.md), [Verb.Aggregate](./schema.verb.md), [AggregateArgs](./schema.aggregateargs.md), [BasicInput](./schema.basicinput.md), [Verb.Bin](./schema.verb.md), [BinArgs](./schema.binargs.md), [Verb.Binarize](./schema.verb.md), [BinarizeArgs](./schema.binarizeargs.md), [Verb.Boolean](./schema.verb.md), [BooleanArgs](./schema.booleanargs.md), [Verb.Concat](./schema.verb.md), [VariadicInput](./schema.variadicinput.md), [Verb.Convert](./schema.verb.md), [ConvertArgs](./schema.convertargs.md), [Verb.Copy](./schema.verb.md), [CopyArgs](./schema.copyargs.md), [Verb.Dedupe](./schema.verb.md), [DedupeArgs](./schema.dedupeargs.md), [Verb.Derive](./schema.verb.md), [DeriveArgs](./schema.deriveargs.md), [Verb.Difference](./schema.verb.md), [Verb.Decode](./schema.verb.md), [EncodeDecodeArgs](./schema.encodedecodeargs.md), [Verb.Drop](./schema.verb.md), [DropArgs](./schema.dropargs.md), [Verb.Encode](./schema.verb.md), [Verb.Erase](./schema.verb.md), [EraseArgs](./schema.eraseargs.md), [Verb.Fill](./schema.verb.md), [FillArgs](./schema.fillargs.md), [Verb.Filter](./schema.verb.md), [FilterArgs](./schema.filterargs.md), [Verb.Fold](./schema.verb.md), [FoldArgs](./schema.foldargs.md), [Verb.Groupby](./schema.verb.md), [GroupbyArgs](./schema.groupbyargs.md), [Verb.Impute](./schema.verb.md), [ImputeArgs](./schema.imputeargs.md), [Verb.Intersect](./schema.verb.md), [Verb.Join](./schema.verb.md), [JoinArgs](./schema.joinargs.md), [DualInput](./schema.dualinput.md), [Verb.Lookup](./schema.verb.md), [LookupArgs](./schema.lookupargs.md), [Verb.Merge](./schema.verb.md), [MergeArgs](./schema.mergeargs.md), [Verb.Print](./schema.verb.md), [PrintArgs](./schema.printargs.md), [Verb.Onehot](./schema.verb.md), [OnehotArgs](./schema.onehotargs.md), [Verb.Orderby](./schema.verb.md), [OrderbyArgs](./schema.orderbyargs.md), [Verb.Pivot](./schema.verb.md), [PivotArgs](./schema.pivotargs.md), [Verb.Recode](./schema.verb.md), [RecodeArgs](./schema.recodeargs.md), [Verb.Rename](./schema.verb.md), [RenameArgs](./schema.renameargs.md), [Verb.Rollup](./schema.verb.md), [RollupArgs](./schema.rollupargs.md), [Verb.Sample](./schema.verb.md), [SampleArgs](./schema.sampleargs.md), [Verb.Select](./schema.verb.md), [SelectArgs](./schema.selectargs.md), [Verb.Spread](./schema.verb.md), [SpreadArgs](./schema.spreadargs.md), [Verb.Destructure](./schema.verb.md), [DestructureArgs](./schema.destructureargs.md), [Verb.StringsReplace](./schema.verb.md), [StringsReplaceArgs](./schema.stringsreplaceargs.md), [Verb.StringsLower](./schema.verb.md), [StringsArgs](./schema.stringsargs.md), [Verb.StringsUpper](./schema.verb.md), [Verb.Unfold](./schema.verb.md), [UnfoldArgs](./schema.unfoldargs.md), [Verb.Ungroup](./schema.verb.md), [Verb.Unhot](./schema.verb.md), [UnhotArgs](./schema.unhotargs.md), [Verb.Union](./schema.verb.md), [Verb.Unorder](./schema.verb.md), [Verb.Unroll](./schema.verb.md), [UnrollArgs](./schema.unrollargs.md), [Verb.Window](./schema.verb.md), [WindowArgs](./schema.windowargs.md), [Verb.Workflow](./schema.verb.md), [WorkflowArgs](./schema.workflowargs.md), [UnknownInput](./schema.unknowninput.md)