fetcher.js

Functions

fetchUrl(url, options) ⇒ Promise.<string>

This function tries to fetch a given URL using the fetch API. It either returns a Promise for the response text or throws an error,if the url can't be fetched.

fetchMeta(identifier) ⇒ Promise.<Document>

This function fetches a meta XML file using a given Trismegistos identifier.It constructs a URL from the identifier and fetches the URL with fetchUrl.The file is parsed using DomParser and returned in XML format.If the identifier is not valid, it will throw an error.

fetchDdb(ddbHybrid) ⇒ Promise.<Document>

This function fetches a meta XML file using a given hybrid identifier.It constructs a URL from the identifier and fetches the URL with fetchUrl.The file is parsed using DomParser and returned in XML format.

isInteger(str) ⇒ boolean

This function tests if a given string is an integer or not and returnsa boolean value.

fetchUrl(url, options) ⇒ Promise.<string>

This function tries to fetch a given URL using the fetch API. It either returns a Promise for the response text or throws an error, if the url can't be fetched.

Kind: global function
Returns: Promise.<string> - Promise for the fetched data text.
Throws:

• Error Throws an error if the URL can't be fetched for some reason.

Param	Type	Description
url	string	Url to be fetched.
options	Object	Optional fetch options.

Example

fetchUrl("https://spoo.me/", {
 method: "POST",
 headers: {
  "Content-Type": "application/x-www-form-urlencoded",
  "Accept": "application/json",
 },
 body: new URLSearchParams({url: "example.com"})
}).then(data => {
 console.log(data);
}).catch(error => {
 console.error(error);
});

Example

fetchUrl("https://example.com/").then(d => {}).catch(e => {});

fetchMeta(identifier) ⇒ Promise.<Document>

This function fetches a meta XML file using a given Trismegistos identifier. It constructs a URL from the identifier and fetches the URL with fetchUrl. The file is parsed using DomParser and returned in XML format. If the identifier is not valid, it will throw an error.

Kind: global function
Returns: Promise.<Document> - Promise resolving to the wanted XML file.
Throws:

• Error Throws an error if the identifier is not valid or if an error occurs while fetching the URL.

Param	Type	Description
identifier	string	Trismegistos identifier for the file to fetch.

Example

const xml = fetchMeta("1").then(metaXml => {}).catch(e => {});

fetchDdb(ddbHybrid) ⇒ Promise.<Document>

This function fetches a meta XML file using a given hybrid identifier. It constructs a URL from the identifier and fetches the URL with fetchUrl. The file is parsed using DomParser and returned in XML format.

Kind: global function
Returns: Promise.<Document> - Promise resolving to the wanted XML file.
Throws:

• Error Throws an error if an error occurs while fetching the URL.

Param	Type	Description
ddbHybrid	string	Hybrid identifier for the file to fetch.

Example

const xml = fetchDdb("psi;4;345").then(ddbXml => {}).catch(e => {});

isInteger(str) ⇒ boolean

This function tests if a given string is an integer or not and returns a boolean value.

Kind: global function
Returns: boolean - True, if the string is a integer.

Param	Type	Description
str	string	String to test.

Example

isInteger("42");
// Output: true.

Example

isInteger("I'm an integer.");
// Output: false.