eleventy-plugin-typecheck-filters

An eleventy plugin for type checks inside templates. At least for nunjucks as this engine does not come with type check filters.

Little Example:

{% if content|isArray %}
  {% for item in content %}{% render item.handle, item.config %}{% endfor %}
{% else if content|isString %}
  {{ content }}
{% else if content|isNumber %}
  {{ content|localizeNumber }}
{% endif %}

Installation

• Tested with eleventy 2.0.0 but should work with 1.0, too.

npm install --save-dev eleventy-plugin-component-tag

Then open your Eleventy config file (probably .eleventy.js) and use addPlugin:

const pluginTypeCheckFilters = require("eleventy-plugin-typecheck-tag");

module.exports = function(eleventyConfig) {
    eleventyConfig.addPlugin(pluginTypeCheckFilters);
};

You’re only allowed one module.exports in your configuration file, so make sure you only copy the require and the addPlugin lines above!

Options

const pluginComponentTag = require("eleventy-plugin-typecheck-filters");

module.exports = function(eleventyConfig) {
    eleventyConfig.addPlugin(pluginComponentTag, {
      // You can map the names of the filter functions to your liking.
      // The key in this dict is your filter name, the value is the function name.
      // If you don't map a function name, it won't be available in the views.
      nameMapping: {
        // <filterName>: <functionName>
        isString: "isString",
        isArray: "isArray",
        isList: "isArray",
        isNumber: "isNumber",
        isObject: "isObject"
      }
    });
};

Filters

• data|isString .
  Returns true if the data is a string, false otherwise.

• data|isNumber .
  Returns true if the data is a number, false otherwise.

• data|isArray .
  data|isList .
  Returns true if the data is an array, false otherwise.

• data|isObject .
  Returns true if the data is an object, false otherwise.