Function base64FormatDecode

test/fixtures/snapshot/typescript.js:90483–90490

(ch)

                            ts.Debug.fail("".concat(value, ": not a base64 value"));
    }
    function base64FormatDecode(ch) {
        return ch >= 65 /* CharacterCodes.A */ && ch <= 90 /* CharacterCodes.Z */ ? ch - 65 /* CharacterCodes.A */ :
            ch >= 97 /* CharacterCodes.a */ && ch <= 122 /* CharacterCodes.z */ ? ch - 97 /* CharacterCodes.a */ + 26 :
                ch >= 48 /* CharacterCodes._0 */ && ch <= 57 /* CharacterCodes._9 */ ? ch - 48 /* CharacterCodes._0 */ + 52 :
                    ch === 43 /* CharacterCodes.plus */ ? 62 :
                        ch === 47 /* CharacterCodes.slash */ ? 63 :
                            -1;
    }
    function isSourceMappedPosition(value) {
        return value.sourceIndex !== undefined
            && value.sourcePosition !== undefined;