import { fmTest } from "https://deno.land/x/ter@0.15.46/deps/std.ts";
Tests if a string has valid front matter. Supports YAML, TOML and JSON.
Parameters
A list of formats to test for. Defaults to all supported formats.
import { test, Format } from "https://deno.land/std@0.224.0/front_matter/mod.ts";
import { assert } from "https://deno.land/std@0.224.0/assert/assert.ts";
assert(test("---\ntitle: Three dashes marks the spot\n---\n"));
assert(test("---toml\ntitle = 'Three dashes followed by format marks the spot'\n---\n"));
assert(test("---json\n{\"title\": \"Three dashes followed by format marks the spot\"}\n---\n"));
assert(!test("---json\n{\"title\": \"Three dashes followed by format marks the spot\"}\n---\n", [Format.YAML]));