[SOLV-544] chore: Increase intent exclusiveFor window from 1m to 5m

src/lib/libraries/intent.ts

@@ -98,6 +98,7 @@ function encodeOutputs(outputs: MandateOutput[]) {
 const ONE_MINUTE = 60;
 const ONE_HOUR = 60 * ONE_MINUTE;
 const ONE_DAY = 24 * ONE_HOUR;
+const EXCLUSIVITY_WINDOW = 5 * ONE_MINUTE; // gives solvers time to fill before exclusivity ends
 
 /**
  * @notice Class representing a Li.Fi Intent. Contains intent abstractions and helpers.
@@ -179,16 +180,12 @@ export class Intent {
 	}
 
 	encodeOutputs(currentTime: number) {
-		// Get the current epoch timestamp:
-		currentTime;
-		const ONE_MINUTE = 60;
-
 		let context: `0x${string}` = "0x";
 		if (this.exclusiveFor) {
 			const paddedExclusiveFor: `0x${string}` = `0x${this.exclusiveFor.replace("0x", "").padStart(64, "0")}`;
 			context = encodePacked(
 				["bytes1", "bytes32", "uint32"],
-				["0xe0", paddedExclusiveFor, currentTime + ONE_MINUTE]
+				["0xe0", paddedExclusiveFor, currentTime + EXCLUSIVITY_WINDOW]
 			);
 		}
 

tests/unit/intent.test.ts

@@ -4,6 +4,7 @@ import type { chain, Token } from "../../src/lib/config";
 
 const FORTY_FOUR_HOURS = 44 * 60 * 60; // 158_400
 const TWO_DAYS = 2 * 24 * 60 * 60; // 172_800
+const FIVE_MINUTES = 5 * 60; // 300
 
 function token(chain: chain): Token {
 	return {
@@ -14,9 +15,9 @@ function token(chain: chain): Token {
 	};
 }
 
-function makeIntent(inputChain: chain, outputChain: chain) {
+function makeIntent(inputChain: chain, outputChain: chain, exclusiveFor = "") {
 	return new Intent({
-		exclusiveFor: "",
+		exclusiveFor,
 		inputTokens: [{ token: token(inputChain), amount: 1n }],
 		outputTokens: [{ token: token(outputChain), amount: 1n }],
 		verifier: "polymer",
@@ -78,4 +79,22 @@ describe("Intent deadlines", () => {
 
 		expect(order.fillDeadline).toBeLessThanOrEqual(order.expires);
 	});
+
+	it("encodes exclusiveFor deadline as now + 5 minutes in output context", () => {
+		const exclusiveFor = "0x2222222222222222222222222222222222222222";
+		const before = Math.floor(Date.now() / 1000);
+		const { order } = makeIntent("base", "arbitrum", exclusiveFor).singlechain();
+		const after = Math.floor(Date.now() / 1000);
+
+		const context = order.outputs[0].context;
+		expect(context.length).toBeGreaterThan(2); // not just "0x"
+
+		// Layout: bytes1 0xe0 || bytes32 exclusiveFor || uint32 deadline
+		// = 37 bytes = 74 hex chars after the "0x" prefix.
+		expect(context.length).toBe(2 + 74);
+
+		const deadline = parseInt(context.slice(-8), 16);
+		expect(deadline).toBeGreaterThanOrEqual(before + FIVE_MINUTES);
+		expect(deadline).toBeLessThanOrEqual(after + FIVE_MINUTES);
+	});
 });