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authorEdaz <edazpotato@gmail.com>2021-11-10 12:08:47 +1300
committerGitHub <noreply@github.com>2021-11-10 00:08:47 +0100
commitab710a881edf161eb96036f8b0b523057f39a290 (patch)
tree48c37c4e0ef97907c20f77b8093ccdc7a4fe849a
parent97cb7331e768cd8cce41e6b164fb4b0ff7915939 (diff)
[typescript/en] Add template literal types (#4265)
* Add template literal types * Update typescript.html.markdown Co-authored-by: Andre Polykanine <ap@oire.me> Co-authored-by: Andre Polykanine <ap@oire.me>
-rw-r--r--typescript.html.markdown10
1 files changed, 10 insertions, 0 deletions
diff --git a/typescript.html.markdown b/typescript.html.markdown
index 64be9401..74cd15c6 100644
--- a/typescript.html.markdown
+++ b/typescript.html.markdown
@@ -238,6 +238,16 @@ if (state.type === "success") {
console.error(state.message);
}
+// Template Literal Types
+// Use to create complex string types
+type OrderSize = "regular" | "large";
+type OrderItem = "Espresso" | "Cappuccino";
+type Order = `A ${OrderSize} ${OrderItem}`;
+
+let order1: Order = "A regular Cappuccino";
+let order2: Order = "A large Espresso";
+let order3: Order = "A small Espresso"; // Error
+
// Iterators and Generators
// for..of statement