@jbrowse/core/esm/util/mst-reflection.js

JBrowse 2 core libraries used by plugins

import { isArrayType, isLateType, isMapType, isOptionalType, isUnionType, } from '@jbrowse/mobx-state-tree';
export function getSubType(type) {
    let t;
    if (isOptionalType(type)) {
        t = type._subtype || type.type;
    }
    else if (isArrayType(type) || isMapType(type)) {
        t = type._subtype || type._subType || type.subType;
    }
    else if (typeof type.getSubType === 'function') {
        return type.getSubType();
    }
    else {
        throw new TypeError('unsupported mst type');
    }
    if (!t) {
        throw new Error('failed to get subtype');
    }
    return t;
}
export function getUnionSubTypes(unionType) {
    if (!isUnionType(unionType)) {
        throw new TypeError('not an MST union type');
    }
    const t = unionType._types ||
        unionType.types ||
        getSubType(unionType)._types ||
        getSubType(unionType).types;
    if (!t) {
        throw new Error('failed to extract subtypes from mst union');
    }
    return t;
}
export function getPropertyType(type, propertyName) {
    return type.properties[propertyName];
}
export function getDefaultValue(type) {
    if (!isOptionalType(type)) {
        throw new TypeError('type must be an optional type');
    }
    return type._defaultValue || type.defaultValue;
}
export function getEnumerationValues(type) {
    const subtypes = getUnionSubTypes(type);
    return subtypes.map(t => t.value);
}
export function resolveLateType(maybeLate) {
    if (!isUnionType(maybeLate) &&
        !isArrayType(maybeLate) &&
        isLateType(maybeLate)) {
        return maybeLate.getSubType();
    }
    return maybeLate;
}