1 | /**
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2 | * A parser to parser null, undefined, invalid and NIL values.
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3 | *
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4 | * @public
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5 | * @class
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6 | */
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7 | class InvalidAwareTypes {
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8 | /**
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9 | * Static method which gets/sets the invalid value registry.
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10 | *
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11 | * @public
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12 | * @param {Object} config - The custom configuration supplied by user.
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13 | * @return {Object} Returns the invalid values registry.
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14 | */
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15 | static invalidAwareVals (config) {
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16 | if (!config) {
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17 | return InvalidAwareTypes._invalidAwareValsMap;
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18 | }
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19 | return Object.assign(InvalidAwareTypes._invalidAwareValsMap, config);
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20 | }
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21 |
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22 | /**
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23 | * Initialize a new instance.
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24 | *
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25 | * @public
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26 | * @param {string} value - The value of the invalid data type.
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27 | */
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28 | constructor (value) {
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29 | this._value = value;
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30 | }
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31 |
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32 | /**
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33 | * Returns the current value of the instance.
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34 | *
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35 | * @public
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36 | * @return {string} Returns the value of the invalid data type.
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37 | */
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38 | value () {
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39 | return this._value;
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40 | }
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41 |
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42 | /**
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43 | * Returns the current value of the instance in string format.
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44 | *
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45 | * @public
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46 | * @return {string} Returns the value of the invalid data type.
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47 | */
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48 | toString () {
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49 | return String(this._value);
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50 | }
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51 |
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52 | static isInvalid(val) {
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53 | return (val instanceof InvalidAwareTypes) || !!InvalidAwareTypes.invalidAwareVals()[val];
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54 | }
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55 |
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56 | static getInvalidType(val) {
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57 | return val instanceof InvalidAwareTypes ? val : InvalidAwareTypes.invalidAwareVals()[val];
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58 | }
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59 | }
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60 |
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61 | /**
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62 | * Enums for Invalid types.
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63 | */
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64 | InvalidAwareTypes.NULL = new InvalidAwareTypes('null');
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65 | InvalidAwareTypes.NA = new InvalidAwareTypes('na');
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66 | InvalidAwareTypes.NIL = new InvalidAwareTypes('nil');
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67 |
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68 | /**
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69 | * Default Registry for mapping the invalid values.
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70 | *
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71 | * @private
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72 | */
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73 | InvalidAwareTypes._invalidAwareValsMap = {
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74 | invalid: InvalidAwareTypes.NA,
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75 | nil: InvalidAwareTypes.NIL,
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76 | null: InvalidAwareTypes.NULL,
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77 | undefined: InvalidAwareTypes.NA
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78 | };
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79 |
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80 | export default InvalidAwareTypes;
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