1 | import { SDLValidationContext } from "../ValidationContext";
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2 | import { ASTVisitor } from "../../language/visitor";
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3 |
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4 | export function schemaDefinitionNotAloneMessage(): string;
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5 |
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6 | export function canNotDefineSchemaWithinExtensionMessage(): string;
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7 |
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8 | /**
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9 | * Lone Schema definition
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10 | *
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11 | * A GraphQL document is only valid if it contains only one schema definition.
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12 | */
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13 | export function LoneSchemaDefinition(context: SDLValidationContext): ASTVisitor;
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