atom-text-editor {
text-rendering: optimizeLegibility;
-webkit-font-smoothing: antialiased;
font-family: "Operator Mono";
font-weight: 500;
line-height: 1.7;
}
For Atom version < 1.13.x
atom-text-editor::shadow {
.storage.type.function.arrow,
.keyword.operator:not(.accessor),
.punctuation.definition.entity.css {
font-family: 'Fira Code';
}
.string.quoted,
.string.regexp {
-webkit-font-feature-settings: "liga" off, "calt" off;
}
}
For Atom version >= 1.13.x
atom-text-editor.editor {
.syntax--storage.syntax--type.syntax--function.syntax--arrow,
.syntax--keyword.syntax--operator:not(.accessor),
.syntax--punctuation.syntax--definition {
font-family: "Fira Code";
}
.syntax--string.syntax--quoted,
.syntax--string.syntax--regexp {
-webkit-font-feature-settings: "liga" off, "calt" off;
}
}
Save file and it's done.
Works fine with Javascript:
Operator Mono: http://www.typography.com/blog/introducing-operator ($100)
Fira Code: https://github.com/tonsky/FiraCode (Free)