fluent-mailto

A fluent library for creating mailto links in javascript.

Testing

* npm test

Build

* npm run build

Problem statement

I couldn't find any libraries that made it simple to define mailto links in javascript code.

For example, when asked to add a mailto link with prepolated data in a react component, no one wants to reinvent the wheel:

1. conditionally combining receipients, body, subject, cc, and bcc with ?
1. encoding the headers to handle whitespaces, newlines, etc. (i.e. encodeURI and encodeURIComponent)

Furthermore, it can be frustrating either:

1. Not being able to define a mailto link concisely
1. Defining a new helper function to abstract this formatting code

Example Usage

fluent-mailto makes it easier to define mailto links in javascript:

Basic

``
import { mail } from 'fluent-mailto';

...

render() {
const { recipient, subject, body } = this.props;

const mailto = mail.to(recipient)
.subject(subject)
.body(body)
.build();

return (
Click here
);
}

`

Order agnostic

`
import { mail } from 'fluent-mailto';

describe('mail', () => {
it('order does not matter', () => {
const first = mail.to('example.com').subject('hello world!').build();
const second = mail.subject('hello world!').to('example.com').build();

expect(first).toEqual(second);
});
});

`

Immutable Builder

`
import { mail } from 'fluent-mailto';

...

constructor() {
this.mailtoBase = mail.to('billing@test.com').cc('support@test.com');
}

render() {
const { customers } = this.props;

return customers
.map(this.getCustomBody)
.map((body) => this.mailBase.body(body).build())
.map((mailto, index) => {
return Click here;
});
}

private getCustomBody(customer) {
// ... Custom logic
}
`

Next steps

1. I haven't conducted performance testing
1. If you are using strange emails, like joe@xyz.com&cc=bob@xyz.com&body=hello that are technically supported by RFC2368, this library might not be right for you. Need to investigate more how to augment encodeURI or encodeURIComponent to support:
`
Within mailto URLs, the characters "?", "=", "&" are reserved.

Because the "&" (ampersand) character is reserved in HTML, any mailto
URL which contains an ampersand must be spelled differently in HTML
than in other contexts. A mailto URL which appears in an HTML
document must use "&" instead of "&".
``