Test

node_modules/preact/debug/src/check-props.js

@@ -0,0 +1,54 @@
+const ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';
+
+let loggedTypeFailures = {};
+
+/**
+ * Reset the history of which prop type warnings have been logged.
+ */
+export function resetPropWarnings() {
+	loggedTypeFailures = {};
+}
+
+/**
+ * Assert that the values match with the type specs.
+ * Error messages are memorized and will only be shown once.
+ *
+ * Adapted from https://github.com/facebook/prop-types/blob/master/checkPropTypes.js
+ *
+ * @param {object} typeSpecs Map of name to a ReactPropType
+ * @param {object} values Runtime values that need to be type-checked
+ * @param {string} location e.g. "prop", "context", "child context"
+ * @param {string} componentName Name of the component for error messages.
+ * @param {?Function} getStack Returns the component stack.
+ */
+export function checkPropTypes(
+	typeSpecs,
+	values,
+	location,
+	componentName,
+	getStack
+) {
+	Object.keys(typeSpecs).forEach(typeSpecName => {
+		let error;
+		try {
+			error = typeSpecs[typeSpecName](
+				values,
+				typeSpecName,
+				componentName,
+				location,
+				null,
+				ReactPropTypesSecret
+			);
+		} catch (e) {
+			error = e;
+		}
+		if (error && !(error.message in loggedTypeFailures)) {
+			loggedTypeFailures[error.message] = true;
+			console.error(
+				`Failed ${location} type: ${error.message}${
+					(getStack && `\n${getStack()}`) || ''
+				}`
+			);
+		}
+	});
+}