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49 lines
2.0 KiB
JavaScript
49 lines
2.0 KiB
JavaScript
"use strict";
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const errors = require("../errors");
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const getValueType = require("../util/get-value-type");
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module.exports = function createNumberValidatorFunction(options = {}, name = "<unknown>") {
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let mayBeNaN = (options.mayBeNaN === true);
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let mayBeInfinity = (options.mayBeInfinity === true);
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let hasMinimum = (options.minimum != null);
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let hasMaximum = (options.maximum != null);
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if (hasMinimum && typeof options.minimum !== "number") {
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throw new Error("Minimum value for number must be a number");
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} else if (hasMaximum && typeof options.maximum !== "number") {
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throw new Error("Maximum value for number must be a number");
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} else if (hasMinimum && hasMaximum && options.minimum > options.maximum) {
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throw new Error("Minimum value for number cannot be higher than maximum value");
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} else {
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return function validateNumber(value) {
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/* TODO: More consistent error message format, with consistent property path metadata? */
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if (typeof value !== "number") {
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return new errors.ValidationError(`Expected a number, got ${getValueType(value)} instead`);
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// return new errors.ValidationError(`Specified value for property '${name}' is not a number`, {
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// value: value,
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// property: name
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// });
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} else if (!mayBeNaN && isNaN(value)) {
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return new errors.ValidationError(`Specified value for property '${name}' is NaN, but this is not allowed`, {
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property: name
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});
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} else if (!mayBeInfinity && !isFinite(value)) {
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return new errors.ValidationError(`Specified value for property '${name}' is an infinite value, but this is not allowed`, {
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property: name
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});
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} else if (hasMinimum && value < options.minimum) {
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return new errors.ValidationError(`Value for property '${name}' must be at least ${options.minimum}`, {
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property: name
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});
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} else if (hasMaximum && value > options.maximum) {
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return new errors.ValidationError(`Value for property '${name}' cannot be higher than ${options.maximum}`, {
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property: name
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});
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} else {
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return true;
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}
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};
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}
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};
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