mezzanine/es/type/descriptor.js

Fantasy land union types with pattern matching

import { map, is, isNil, where, prop, has } from 'ramda';

import { isObject, isMezzanine } from './fixtures';
import './type-container';




//$FlowIssue
var reducePred = where;

export function createPred(val) {
  switch (true) {
    case isDirectlyEquals(val):return obj => obj === val;
    case isCheckByType(val):return is(val);
    case isMezzanine(val):{
        //$FlowIssue
        var cast = val;
        return obj => cast.is(obj);
      }
    case typeof val === 'function':{
        var _cast = val;
        return _cast;
      }
    case isNil(val):return isNil;
    case typeof val === 'object':{
        var _cast2 = val;
        var mapped = map(createPred, _cast2);
        return reducePred(mapped);
      }
    default:{
        var _cast3 = val;
        return _cast3;
      }}

}
export function createBuilder(val, data) {
  switch (true) {
    case isDirectlyEquals(val):return data;
    case isCheckByType(val):return data;
    case isMezzanine(val):return val(data);
    case typeof val === 'function':return data;
    case isNil(val):return data;
    case typeof val === 'object':return reduceBuilder(val, data);
    default:return data;}

}
function reduceBuilder(predMap, data) {
  var keys = Object.keys(predMap);
  var result = {};
  for (var i = 0, ln = keys.length; i < ln; ++i) {
    var _key = keys[i];
    var keyPred = predMap[_key];
    var nestedData = prop(_key, data);
    result[_key] = createBuilder(keyPred, nestedData);
  }
  return result;
}

export function transformInput(val, isMono) {
  switch (true) {
    case isMono === false:return val;
    case isMezzanine(val):return { value: val };
    case !isObject(val):return { value: val };
    case !has('value', val):return { value: val };
    default:return val;}

}
var isDirectlyEquals = val =>
typeof val === 'string' ||
typeof val === 'number' ||
typeof val === 'boolean';
var isCheckByType = val =>
val === String ||
val === Number ||
val === Boolean ||
val === Function ||
val === Array;
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