Prepare for deploying the contracts and build artifacts to npmjs

.waffle.json

@@ -1,5 +1,5 @@
 {
-  "solcVersion": "./node_modules/solc",
+  "compilerVersion": "./node_modules/solc",
   "outputType": "all",
   "compilerOptions": {
     "outputSelection": {

package.json

@@ -1,12 +1,18 @@
 {
+  "name": "@uniswap/v2-core",
+  "version": "1.0.0-beta.0",
+  "files": [
+    "contracts",
+    "build"
+  ],
   "engines": {
     "node": ">=10"
   },
   "devDependencies": {
     "@types/chai": "^4.2.6",
     "@types/mocha": "^5.2.7",
     "chai": "^4.2.0",
-    "ethereum-waffle": "^2.3.1",
+    "ethereum-waffle": "^2.4.1",
     "ethereumjs-util": "^6.2.0",
     "mocha": "^6.2.2",
     "prettier": "^1.19.1",
@@ -22,7 +28,8 @@
     "compile": "waffle .waffle.json",
     "pretest": "yarn compile",
     "test": "mocha",
-    "check-compile-output": "./scripts/check-compile-output.sh"
+    "check-compile-output": "./scripts/check-compile-output.sh",
+    "prepare": "yarn compile"
   },
   "license": "GPL-3.0-or-later"
 }

test/UniswapV2Factory.spec.ts

@@ -67,19 +67,19 @@ describe('UniswapV2Factory', () => {
 
   it('createPair:gas', async () => {
     const gasCost = await factory.estimate.createPair(...TEST_ADDRESSES)
-    expect(gasCost).to.eq(2513232)
+    expect(gasCost).to.eq(2512920)
   })
 
   it('setFeeTo', async () => {
-    await expect(factory.connect(other).setFeeTo(other.address)).to.be.reverted // UniswapV2: FORBIDDEN
+    await expect(factory.connect(other).setFeeTo(other.address)).to.be.revertedWith('UniswapV2: FORBIDDEN')
     await factory.setFeeTo(wallet.address)
     expect(await factory.feeTo()).to.eq(wallet.address)
   })
 
   it('setFeeToSetter', async () => {
-    await expect(factory.connect(other).setFeeToSetter(other.address)).to.be.reverted // UniswapV2: FORBIDDEN
+    await expect(factory.connect(other).setFeeToSetter(other.address)).to.be.revertedWith('UniswapV2: FORBIDDEN')
     await factory.setFeeToSetter(other.address)
     expect(await factory.feeToSetter()).to.eq(other.address)
-    await expect(factory.setFeeToSetter(wallet.address)).to.be.reverted // UniswapV2: FORBIDDEN
+    await expect(factory.setFeeToSetter(wallet.address)).to.be.revertedWith('UniswapV2: FORBIDDEN')
   })
 })

test/UniswapV2Pair.spec.ts

@@ -177,7 +177,7 @@ describe('UniswapV2Pair', () => {
     await token1.transfer(pair.address, swapAmount)
     await mineBlock(provider, (await provider.getBlock('latest')).timestamp + 1)
     const gasCost = await pair.estimate.swap(expectedOutputAmount, 0, wallet.address, '0x', overrides)
-    expect(gasCost).to.eq(79378)
+    expect(gasCost).to.eq(79136)
   })
 
   it('burn', async () => {