| 1 | var util = require('../core').util;
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| 2 |
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| 3 | /**
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| 4 | * An object recognizable as a numeric value that stores the underlying number
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| 5 | * as a string.
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| 6 | *
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| 7 | * Intended to be a deserialization target for the DynamoDB Document Client when
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| 8 | * the `wrapNumbers` flag is set. This allows for numeric values that lose
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| 9 | * precision when converted to JavaScript's `number` type.
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| 10 | */
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| 11 | var DynamoDBNumberValue = util.inherit({
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| 12 | constructor: function NumberValue(value) {
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| 13 | this.wrapperName = 'NumberValue';
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| 14 | this.value = value.toString();
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| 15 | },
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| 16 |
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| 17 | /**
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| 18 | * Render the underlying value as a number when converting to JSON.
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| 19 | */
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| 20 | toJSON: function () {
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| 21 | return this.toNumber();
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| 22 | },
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| 23 |
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| 24 | /**
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| 25 | * Convert the underlying value to a JavaScript number.
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| 26 | */
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| 27 | toNumber: function () {
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| 28 | return Number(this.value);
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| 29 | },
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| 30 |
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| 31 | /**
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| 32 | * Return a string representing the unaltered value provided to the
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| 33 | * constructor.
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| 34 | */
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| 35 | toString: function () {
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| 36 | return this.value;
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| 37 | }
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| 38 | });
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| 39 |
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| 40 | /**
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| 41 | * @api private
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| 42 | */
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| 43 | module.exports = DynamoDBNumberValue;
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