alwz
Version:
Extendable library for typecasting
157 lines • 6.26 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.projection = exports.dictionary = exports.object = exports.variant = exports.range = exports.tuple = exports.array = void 0;
const ErrorValue_js_1 = __importDefault(require("./models/ErrorValue.cjs"));
const Converter_js_1 = __importStar(require("./models/Converter.cjs"));
const presets = __importStar(require("./presets.cjs"));
const InvalidArgument = class extends ErrorValue_js_1.default {
};
const array = (conversion, initiator = presets.array.convert) => {
(0, Converter_js_1.assertConversion)(conversion);
if (!(0, Converter_js_1.isConversion)(initiator)) {
throw new Converter_js_1.default.InvalidConversionFunction('initiator must be a function', initiator);
}
return (input) => {
return initiator(input).map(conversion);
};
};
exports.array = array;
const tuple = (conversions, initiator = presets.array.convert) => {
if (!Array.isArray(conversions)) {
throw new Converter_js_1.default.InvalidConversionFunction('first argument must be an array', conversions);
}
conversions.forEach((conversion, index) => {
if (!(0, Converter_js_1.isConversion)(conversion)) {
throw new Converter_js_1.default.InvalidConversionFunction('conversion ' + index + ' must be a function', [index, conversion]);
}
});
if (!(0, Converter_js_1.isConversion)(initiator)) {
throw new Converter_js_1.default.InvalidConversionFunction('initiator must be a function', initiator);
}
return (input) => {
const array = initiator(input);
return conversions.map((fn, index) => fn(array[index]));
};
};
exports.tuple = tuple;
const range = (lower = -Number.MAX_VALUE, upper = Number.MAX_VALUE, fallback, conversion = presets.double.convert) => {
(0, Converter_js_1.assertConversion)(conversion);
lower = conversion(lower);
upper = conversion(upper);
const fallbackActual = fallback === undefined
? (input) => {
const converted = conversion(input);
return upper <= converted ? upper : lower;
}
: fallback;
(0, Converter_js_1.assertFallback)(fallbackActual);
return (input) => {
const converted = conversion(input);
if ((lower <= converted) && (converted <= upper)) {
return converted;
}
return fallbackActual(input);
};
};
exports.range = range;
const variant = (values, fallback = () => values[0], conversion = presets.double.convert) => {
(0, Converter_js_1.assertConversion)(conversion);
(0, Converter_js_1.assertFallback)(fallback);
if (!Array.isArray(values)) {
throw new InvalidArgument('variant values must be an array of allowed values', values);
}
values = values.map((value) => conversion(value));
return (input) => {
const converted = conversion(input);
if (values.includes(converted)) {
return converted;
}
return fallback(input);
};
};
exports.variant = variant;
const object = (schema, conversion = presets.object.convert) => {
if (typeof schema !== 'object' || schema === null) {
throw new InvalidArgument('schema must must be an object', schema);
}
for (const key in schema) {
const conversion = schema[key];
(0, Converter_js_1.assertConversion)(conversion);
}
(0, Converter_js_1.assertConversion)(conversion);
return (input) => {
const result = {};
const source = conversion(input);
for (const key in schema) {
const type = schema[key];
result[key] = type(source === null || source === void 0 ? void 0 : source[key]);
}
return result;
};
};
exports.object = object;
const dictionary = (conversion, initiator = presets.object.convert) => {
if (typeof conversion !== 'function') {
throw new InvalidArgument('conversion must be a function', conversion);
}
(0, Converter_js_1.assertConversion)(initiator);
return (input) => {
const result = {};
const source = initiator(input);
for (const key in source) {
result[key] = conversion(source === null || source === void 0 ? void 0 : source[key], key);
}
return result;
};
};
exports.dictionary = dictionary;
const projection = (schema) => {
const builders = Object
.entries(schema)
.map(([key, value]) => {
if (typeof value === 'function') {
return [key, value];
}
else if (value && typeof value === 'object') {
return [key, (0, exports.projection)(value)];
}
else {
throw new ErrorValue_js_1.default('invalid schema item', { key, value });
}
});
return function (source, options) {
return builders
.reduce((target, [key, build]) => {
target[key] = build.call(this, source, options, target);
return target;
}, {});
};
};
exports.projection = projection;
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