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Versions: 26
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Stored size: 1.15 KB
Contents
import { devAssert } from '../jsutils/devAssert.mjs';
import { GraphQLError } from '../error/GraphQLError.mjs';
import { isNameContinue, isNameStart } from '../language/characterClasses.mjs';
/**
* Upholds the spec rules about naming.
*/
export function assertName(name) {
name != null || devAssert(false, 'Must provide name.');
typeof name === 'string' || devAssert(false, 'Expected name to be a string.');
if (name.length === 0) {
throw new GraphQLError('Expected name to be a non-empty string.');
}
for (let i = 1; i < name.length; ++i) {
if (!isNameContinue(name.charCodeAt(i))) {
throw new GraphQLError(
`Names must only contain [_a-zA-Z0-9] but "${name}" does not.`,
);
}
}
if (!isNameStart(name.charCodeAt(0))) {
throw new GraphQLError(
`Names must start with [_a-zA-Z] but "${name}" does not.`,
);
}
return name;
}
/**
* Upholds the spec rules about naming enum values.
*
* @internal
*/
export function assertEnumValueName(name) {
if (name === 'true' || name === 'false' || name === 'null') {
throw new GraphQLError(`Enum values cannot be named: ${name}`);
}
return assertName(name);
}
Version data entries
26 entries across 26 versions & 1 rubygems