Add ignoreProperties: [] to number-max-precision

lib/rules/number-max-precision/README.md

@@ -46,6 +46,32 @@ a { top: 3.24px; }
 
 ## Optional secondary options
 
+### `ignoreProperties: ["/regex/", /regex/, "string"]`
+
+Ignore the precision of numbers for the specified properties.
+
+For example, with `0`.
+
+Given:
+
+```json
+["transition"]
+```
+
+The following patterns are considered violations:
+
+<!-- prettier-ignore -->
+```css
+a { top: 10.5px; }
+```
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+a { transition: all 4.5s ease; }
+```
+
 ### `ignoreUnits: ["/regex/", /regex/, "string"]`
 
 Ignore the precision of numbers for values with the specified units.

lib/rules/number-max-precision/__tests__/index.js

@@ -231,3 +231,103 @@ testRule({
 		},
 	],
 });
+
+testRule({
+	ruleName,
+	config: [0, { ignoreProperties: ['letter-spacing', '/^my-/'] }],
+
+	accept: [
+		{
+			code: 'a { letter-spacing: 1.2px; }',
+		},
+		{
+			code: 'a { my-prop: 3.1%; }',
+		},
+	],
+
+	reject: [
+		{
+			code: 'a { top: 3.1px; }',
+			message: messages.expected(3.1, 0),
+			line: 1,
+			column: 10,
+		},
+		{
+			code: 'a { top: 3.123em; }',
+			message: messages.expected(3.123, 0),
+			line: 1,
+			column: 10,
+		},
+		{
+			code: 'a { myprop: 6.123px 3.1234px; }',
+			warnings: [
+				{
+					message: messages.expected(6.123, 0),
+					line: 1,
+					column: 13,
+				},
+				{
+					message: messages.expected(3.1234, 0),
+					line: 1,
+					column: 21,
+				},
+			],
+		},
+	],
+});
+
+testRule({
+	ruleName,
+	config: [
+		0,
+		{
+			ignoreProperties: ['letter-spacing', '/^my-/'],
+			ignoreUnits: ['%', '/^my-/'],
+		},
+	],
+
+	accept: [
+		{
+			code: 'a { letter-spacing: 1.2px; }',
+		},
+		{
+			code: 'a { my-prop: 3.1%; }',
+		},
+		{
+			code: 'a { top: 1.2%; }',
+		},
+		{
+			code: 'a { top: 1.2my-unit; }',
+		},
+	],
+
+	reject: [
+		{
+			code: 'a { top: 3.1px; }',
+			message: messages.expected(3.1, 0),
+			line: 1,
+			column: 10,
+		},
+		{
+			code: 'a { top: 3.123em; }',
+			message: messages.expected(3.123, 0),
+			line: 1,
+			column: 10,
+		},
+		{
+			code: 'a { myprop: 6.123px 3.1234px; }',
+			warnings: [
+				{
+					message: messages.expected(6.123, 0),
+					line: 1,
+					column: 13,
+				},
+				{
+					message: messages.expected(3.1234, 0),
+					line: 1,
+					column: 21,
+				},
+			],
+		},
+	],
+});

lib/rules/number-max-precision/index.js

@@ -32,6 +32,7 @@ function rule(precision, options) {
 				optional: true,
 				actual: options,
 				possible: {
+					ignoreProperties: [isString, isRegExp],
 					ignoreUnits: [isString, isRegExp],
 				},
 			},
@@ -57,6 +58,12 @@ function rule(precision, options) {
 				return;
 			}
 
+			const prop = node.prop;
+
+			if (optionsMatches(options, 'ignoreProperties', prop)) {
+				return;
+			}
+
 			valueParser(value).walk((valueNode) => {
 				const unit = getUnitFromValueNode(valueNode);