Made the JSON extractor more forgiving.

Change the regular expression to just match everything between curly braces.

This makes a template of `{{data|json}}` to match across multi-line JSON work (test added).

Part of #17. Part of #45.

src/template.ts

@@ -75,7 +75,7 @@ const VALUE_PATTERNS : {[t in TemplateVarType]: string} = {
 	'float': '-?\\d+?(\\.\\d+?)?',
 	'boolean': [...Object.keys(TRUE_LITERALS), ...Object.keys(FALSE_LITERALS)].join('|'),
 	'whitespace': '\\s+',
-	'json': String.raw`((\[[^\}]{3,})?\{s*[^\}\{]{3,}?:.*\}([^\{]+\])?)`
+	'json': '\\{([^}]*)\\}'
 };
 
 //templates with a var of IGNORE_VAR should be ignored for rendering and

test/template/test.ts

@@ -668,6 +668,29 @@ describe('template.extract', () => {
 		assert.deepStrictEqual(actual, golden);
 	});
 
+	it('json modifier full text multi-line', () => {
+		const template = '{{foo|json}}';
+		const input = `{
+	"a": 1,
+	"b":[
+		2,
+		3
+	]
+}`;
+		const t = new Template(template);
+		const actual = t.extract(input);
+		const golden = {
+			foo: {
+				a: 1,
+				b: [
+					2,
+					3
+				]
+			}
+		};
+		assert.deepStrictEqual(actual, golden);
+	});
+
 	it('json modifier', () => {
 		const template = 'foo {{foo|json}} bar';
 		const input = 'foo {"a": 1, "b":[2,3]} bar';