| 1 | /**
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| 2 | * Converts arbitrary values to boolean values using extended conversion rules:
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| 3 | * - Numbers: <>0 are true, =0 are false
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| 4 | * - Strings: "true", "yes", "T", "Y", "1" are true; "false", "no", "F", "N" are false
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| 5 | * - DateTime: <>0 total milliseconds are true, =0 are false
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| 6 | *
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| 7 | * ### Example ###
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| 8 | *
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| 9 | * let value1 = BooleanConverter.toNullableBoolean(true); // true
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| 10 | * let value2 = BooleanConverter.toNullableBoolean("yes"); // true
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| 11 | * let value3 = BooleanConverter.toNullableBoolean(123); // true
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| 12 | * let value4 = BooleanConverter.toNullableBoolean({}); // null
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| 13 | */
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| 14 | export declare class BooleanConverter {
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| 15 | /**
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| 16 | * Converts value into boolean or returns null when conversion is not possible.
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| 17 | *
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| 18 | * @param value the value to convert.
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| 19 | * @returns boolean value or null when convertion is not supported.
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| 20 | */
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| 21 | static toNullableBoolean(value: any): boolean;
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| 22 | /**
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| 23 | * Converts value into boolean or returns false when conversion is not possible.
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| 24 | *
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| 25 | * @param value the value to convert.
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| 26 | * @returns boolean value or false when conversion is not supported.
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| 27 | *
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| 28 | * @see [[toBooleanWithDefault]]
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| 29 | */
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| 30 | static toBoolean(value: any): boolean;
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| 31 | /**
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| 32 | * Converts value into boolean or returns default value when conversion is not possible
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| 33 | *
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| 34 | * @param value the value to convert.
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| 35 | * @param defaultValue the default value
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| 36 | * @returns boolean value or default when conversion is not supported.
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| 37 | *
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| 38 | * @see [[toNullableBoolean]]
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| 39 | */
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| 40 | static toBooleanWithDefault(value: any, defaultValue?: boolean): boolean;
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| 41 | }
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