How to use the asn1js.PrintableString function in asn1js

// endregion

    // region Get a "crypto" extension
    const crypto = getCrypto();
    if (typeof crypto === "undefined") {
        alert("No WebCrypto extension found");
        return;
    }
    // endregion

    // region Put a static values
    certSimpl.version = 2;
    certSimpl.serialNumber = new asn1js.Integer({ value: 1 });
    certSimpl.issuer.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.6", // Country name
        value: new asn1js.PrintableString({ value: "RU" })
    }));
    certSimpl.issuer.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.3", // Common name
        value: new asn1js.BmpString({ value: "Test" })
    }));
    certSimpl.subject.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.6", // Country name
        value: new asn1js.PrintableString({ value: "RU" })
    }));
    certSimpl.subject.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.3", // Common name
        value: new asn1js.BmpString({ value: "Test" })
    }));

    certSimpl.notBefore.value = new Date(2016, 1, 1);
    certSimpl.notAfter.value = new Date(2019, 1, 1);

let publicKey;
	let privateKey;
	//endregion
	
	//region Get a "crypto" extension
	const crypto = getCrypto();
	if(typeof crypto === "undefined")
		return Promise.reject("No WebCrypto extension found");
	//endregion
	
	//region Put a static values
	certSimpl.version = 2;
	certSimpl.serialNumber = new asn1js.Integer({ value: 1 });
	certSimpl.issuer.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.6", // Country name
		value: new asn1js.PrintableString({ value: "RU" })
	}));
	certSimpl.issuer.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.3", // Common name
		value: new asn1js.BmpString({ value: "Test" })
	}));
	certSimpl.subject.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.6", // Country name
		value: new asn1js.PrintableString({ value: "RU" })
	}));
	certSimpl.subject.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.3", // Common name
		value: new asn1js.BmpString({ value: "Test" })
	}));
	
	certSimpl.notBefore.value = new Date(2019, 1, 1);
	certSimpl.notAfter.value = new Date(2022, 1, 1);

// region Put a static values
  certificate.version = 2;
  const serialNumber = crypto.getRandomValues(new Uint8Array(10));
  certificate.serialNumber = new asn1js.Integer();
  certificate.serialNumber.valueBlock.valueHex = serialNumber.buffer;

  const commonName = new pkijs.AttributeTypeAndValue({
    type: "2.5.4.3", // Common name
    value: new asn1js.PrintableString({ value: process.env.FORTIFY_SSL_CN || "127.0.0.1" }),
  });

  certificate.subject.typesAndValues.push(commonName);
  certificate.issuer.typesAndValues.push(new pkijs.AttributeTypeAndValue({
    type: "2.5.4.3", // Common name
    value: new asn1js.PrintableString({ value: "Fortify Local CA" }),
  }));

  // Valid period is 1 year
  certificate.notBefore.value = new Date(); // current date
  const notAfter = new Date();
  notAfter.setFullYear(notAfter.getFullYear() + 1);
  certificate.notAfter.value = notAfter;

  certificate.extensions = []; // Extensions are not a part of certificate by default, it's an optional array

  // Extended key usage
  const extKeyUsage = new pkijs.ExtKeyUsage({
    keyPurposes: ["1.3.6.1.5.5.7.3.1"],
  });
  certificate.extensions.push(new pkijs.Extension({
    extnID: "2.5.29.37",

toSchema()
	{
		//region Create array for output sequence
		let result;
		
		switch(this.type)
		{
			case 0: // TELETEXSTRING
				result = new asn1js.TeletexString({ value: this.value });
				break;
			case 1: // PRINTABLESTRING
				result = new asn1js.PrintableString({ value: this.value });
				break;
			case 2: // UNIVERSALSTRING
				result = new asn1js.UniversalString({ value: this.value });
				break;
			case 3: // UTF8STRING
				result = new asn1js.Utf8String({ value: this.value });
				break;
			case 4: // BMPSTRING
				result = new asn1js.BmpString({ value: this.value });
				break;
			default:
				throw new Error("Incorrectly initialized data for \"DirectoryString\" class");
		}
		//endregion
		
		//region Construct and return new ASN.1 schema for this object

//endregion
	
	//region Put a static values 
	certificate.version = 2;
	certificate.serialNumber = new asn1js.Integer({ value: 1 });
	certificate.issuer.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.6", // Country name
		value: new asn1js.PrintableString({ value: "RU" })
	}));
	certificate.issuer.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.3", // Common name
		value: new asn1js.BmpString({ value: "Test" })
	}));
	certificate.subject.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.6", // Country name
		value: new asn1js.PrintableString({ value: "RU" })
	}));
	certificate.subject.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.3", // Common name
		value: new asn1js.BmpString({ value: "Test" })
	}));
	
	certificate.notBefore.value = new Date(2019, 1, 1);
	certificate.notAfter.value = new Date(2022, 1, 1);
	
	certificate.extensions = []; // Extensions are not a part of certificate by default, it's an optional array
	
	//region "BasicConstraints" extension
	const basicConstr = new BasicConstraints({
		cA: true,
		pathLenConstraint: 3
	});

]
						})
					]
				}),
				new asn1js.Constructed({
					name: (names.localityName || ""),
					optional: true,
					idBlock: {
						tagClass: 3, // CONTEXT-SPECIFIC
						tagNumber: 1 // [1]
					},
					value: [
						new asn1js.Choice({
							value: [
								new asn1js.TeletexString({ name: (names.localityName || "") }),
								new asn1js.PrintableString({ name: (names.localityName || "") }),
								new asn1js.UniversalString({ name: (names.localityName || "") }),
								new asn1js.Utf8String({ name: (names.localityName || "") }),
								new asn1js.BmpString({ name: (names.localityName || "") })
							]
						})
					]
				}),
				new asn1js.Constructed({
					optional: true,
					idBlock: {
						tagClass: 3, // CONTEXT-SPECIFIC
						tagNumber: 2 // [2]
					},
					value: [
						new asn1js.Repeated({
							name: (names.postalAdddress || ""),

trustedCertificates = [];
	//endregion
	
	//region Get a "crypto" extension
	const crypto = getCrypto();
	if(typeof crypto === "undefined")
		return Promise.reject("No WebCrypto extension found");
	//endregion
	
	//region Put a static values
	certificate.version = 2;
	certificate.serialNumber = new asn1js.Integer({ value: 1 });
	certificate.issuer.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.6", // Country name
		value: new asn1js.PrintableString({ value: "RU" })
	}));
	certificate.issuer.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.3", // Common name
		value: new asn1js.BmpString({ value: "Test" })
	}));
	certificate.subject.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.6", // Country name
		value: new asn1js.PrintableString({ value: "RU" })
	}));
	certificate.subject.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.3", // Common name
		value: new asn1js.BmpString({ value: "Test" })
	}));
	
	certificate.notBefore.value = new Date(2016, 1, 1);
	certificate.notAfter.value = new Date(2019, 1, 1);

let publicKey;
	let privateKey;
	//endregion
	
	//region Get a "crypto" extension
	const crypto = getCrypto();
	if(typeof crypto === "undefined")
		return Promise.reject("No WebCrypto extension found");
	//endregion
	
	//region Put a static values
	certSimpl.version = 2;
	certSimpl.serialNumber = new asn1js.Integer({ value: 1 });
	certSimpl.issuer.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.6", // Country name
		value: new asn1js.PrintableString({ value: "RU" })
	}));
	certSimpl.issuer.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.3", // Common name
		value: new asn1js.BmpString({ value: "Test" })
	}));
	certSimpl.subject.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.6", // Country name
		value: new asn1js.PrintableString({ value: "RU" })
	}));
	certSimpl.subject.typesAndValues.push(new AttributeTypeAndValue({
		type: "2.5.4.3", // Common name
		value: new asn1js.BmpString({ value: "Test" })
	}));
	
	certSimpl.notBefore.value = new Date(2016, 1, 1);
	certSimpl.notAfter.value = new Date(2019, 1, 1);

async function GenerateCertificate(keyPair: CryptoKeyPair, caKey: CryptoKey) {
  const certificate = new pkijs.Certificate();

  // region Put a static values
  certificate.version = 2;
  const serialNumber = crypto.getRandomValues(new Uint8Array(10));
  certificate.serialNumber = new asn1js.Integer();
  certificate.serialNumber.valueBlock.valueHex = serialNumber.buffer;

  const commonName = new pkijs.AttributeTypeAndValue({
    type: "2.5.4.3", // Common name
    value: new asn1js.PrintableString({ value: process.env.FORTIFY_SSL_CN || "127.0.0.1" }),
  });

  certificate.subject.typesAndValues.push(commonName);
  certificate.issuer.typesAndValues.push(new pkijs.AttributeTypeAndValue({
    type: "2.5.4.3", // Common name
    value: new asn1js.PrintableString({ value: "Fortify Local CA" }),
  }));

  // Valid period is 1 year
  certificate.notBefore.value = new Date(); // current date
  const notAfter = new Date();
  notAfter.setFullYear(notAfter.getFullYear() + 1);
  certificate.notAfter.value = notAfter;

  certificate.extensions = []; // Extensions are not a part of certificate by default, it's an optional array