Document Node.js version requirement and add it to package.json

30 files changed, 95 insertions, 15 deletions

diff --git a/.circleci/config.yml b/.circleci/config.yml
index dbd8b2926..56330aa01 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,7 +3,7 @@ version: 2
 jobs:
   build:
     docker:
-      - image: circleci/node:6.12
+      - image: circleci/node:8.11
     environment:
       CONTRACTS_COMMIT_HASH: '9ed05f5'
     working_directory: ~/repo
@@ -29,7 +29,7 @@ jobs:
             - ~/repo
   test-installation:
     docker:
-      - image: circleci/node:6.12
+      - image: circleci/node:8.11
     working_directory: ~/repo
     steps:
       - restore_cache:
@@ -38,7 +38,7 @@ jobs:
       - run: yarn test:installation
   test-0xjs:
     docker:
-      - image: circleci/node:6.12
+      - image: circleci/node:8.11
     working_directory: ~/repo
     steps:
       - restore_cache:
@@ -55,7 +55,7 @@ jobs:
             - ~/repo/packages/0x.js/coverage/lcov.info
   test-contracts:
     docker:
-      - image: circleci/node:6.12
+      - image: circleci/node:8.11
     working_directory: ~/repo
     steps:
       - restore_cache:
@@ -72,7 +72,7 @@ jobs:
             - ~/repo/packages/contracts/coverage/lcov.info
   test-sol-compiler:
     docker:
-      - image: circleci/node:6.12
+      - image: circleci/node:8.11
     working_directory: ~/repo
     steps:
       - restore_cache:
@@ -89,7 +89,7 @@ jobs:
             - ~/repo/packages/sol-compiler/coverage/lcov.info
   test-rest:
     docker:
-      - image: circleci/node:6.12
+      - image: circleci/node:8.11
     working_directory: ~/repo
     steps:
       - restore_cache:
@@ -131,7 +131,7 @@ jobs:
   lint:
     working_directory: ~/repo
     docker:
-      - image: circleci/node:6.12
+      - image: circleci/node:8.11
     steps:
       - restore_cache:
           keys:
@@ -140,7 +140,7 @@ jobs:
   prettier:
     working_directory: ~/repo
     docker:
-      - image: circleci/node:6.12
+      - image: circleci/node:8.11
     steps:
       - restore_cache:
           keys:
@@ -148,7 +148,7 @@ jobs:
       - run: yarn prettier:ci
   submit-coverage:
     docker:
-      - image: circleci/node:6.12
+      - image: circleci/node:8.11
     working_directory: ~/repo
     steps:
       - restore_cache:
diff --git a/README.md b/README.md
index de77e980e..85d3ebcf6 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,8 @@ Dedicated documentation pages:
 *   [Sol-cov](https://0xproject.com/docs/sol-cov)
 *   [Standard Relayer API](https://github.com/0xProject/standard-relayer-api/blob/master/README.md)
 
+Node version >= 8.0 is required.
+
 Most of the packages require additional typings for external dependencies.
 You can include those by prepending @0xproject/typescript-typings package to your [`typeRoots`](http://www.typescriptlang.org/docs/handbook/tsconfig-json.html) config.
 
diff --git a/package.json b/package.json
index 6aa79c840..e4aed8564 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,9 @@
 {
     "private": true,
     "name": "0x-monorepo",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "workspaces": [
         "packages/*"
     ],
diff --git a/packages/0x.js/package.json b/packages/0x.js/package.json
index 36ea0751f..3da0ca337 100644
--- a/packages/0x.js/package.json
+++ b/packages/0x.js/package.json
@@ -1,6 +1,9 @@
 {
     "name": "0x.js",
     "version": "0.37.2",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "A javascript library for interacting with the 0x protocol",
     "keywords": [
         "0x.js",
@@ -62,9 +65,6 @@
         "url": "https://github.com/0xProject/0x-monorepo"
     },
     "license": "Apache-2.0",
-    "engines": {
-        "node": ">=6.0.0"
-    },
     "devDependencies": {
         "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/dev-utils": "^0.4.1",
diff --git a/packages/abi-gen/package.json b/packages/abi-gen/package.json
index 82184a596..663dc88c6 100644
--- a/packages/abi-gen/package.json
+++ b/packages/abi-gen/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/abi-gen",
     "version": "0.2.13",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "Generate contract wrappers from ABI and handlebars templates",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
diff --git a/packages/assert/package.json b/packages/assert/package.json
index f86bbb33f..7d3d90fbc 100644
--- a/packages/assert/package.json
+++ b/packages/assert/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/assert",
     "version": "0.2.9",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "Provides a standard way of performing type and schema validation across 0x projects",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
diff --git a/packages/base-contract/package.json b/packages/base-contract/package.json
index 90253616b..559865a78 100644
--- a/packages/base-contract/package.json
+++ b/packages/base-contract/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/base-contract",
     "version": "0.3.1",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "0x Base TS contract",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
diff --git a/packages/connect/package.json b/packages/connect/package.json
index 2930de98e..a3a518355 100644
--- a/packages/connect/package.json
+++ b/packages/connect/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/connect",
     "version": "0.6.12",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "A javascript library for interacting with the standard relayer api",
     "keywords": [
         "connect",
@@ -42,9 +45,6 @@
     },
     "author": "Brandon Millman",
     "license": "Apache-2.0",
-    "engines": {
-        "node": ">=6.0.0"
-    },
     "bugs": {
         "url": "https://github.com/0xProject/0x-monorepo/issues"
     },
diff --git a/packages/contracts/package.json b/packages/contracts/package.json
index 557effca2..6cc07d0dc 100644
--- a/packages/contracts/package.json
+++ b/packages/contracts/package.json
@@ -2,6 +2,9 @@
     "private": true,
     "name": "contracts",
     "version": "2.1.28",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "Smart contract components of 0x protocol",
     "main": "index.js",
     "directories": {
diff --git a/packages/dev-utils/package.json b/packages/dev-utils/package.json
index 67b448024..63b93f8ad 100644
--- a/packages/dev-utils/package.json
+++ b/packages/dev-utils/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/dev-utils",
     "version": "0.4.1",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "0x dev TS utils",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
diff --git a/packages/json-schemas/package.json b/packages/json-schemas/package.json
index 9da9da2b7..86edb1343 100644
--- a/packages/json-schemas/package.json
+++ b/packages/json-schemas/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/json-schemas",
     "version": "0.7.23",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "0x-related json schemas",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
diff --git a/packages/metacoin/package.json b/packages/metacoin/package.json
index be1a33d65..d4b7f2997 100644
--- a/packages/metacoin/package.json
+++ b/packages/metacoin/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/metacoin",
     "version": "0.0.6",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "private": true,
     "description": "Example solidity project using 0x dev tools",
     "scripts": {
diff --git a/packages/migrations/package.json b/packages/migrations/package.json
index 95922f7b6..e69171b3e 100644
--- a/packages/migrations/package.json
+++ b/packages/migrations/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/migrations",
     "version": "0.0.5",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "0x smart contract migrations",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
diff --git a/packages/monorepo-scripts/package.json b/packages/monorepo-scripts/package.json
index ef5840546..0afd640f9 100644
--- a/packages/monorepo-scripts/package.json
+++ b/packages/monorepo-scripts/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/monorepo-scripts",
     "version": "0.1.19",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "Helper scripts for the monorepo",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
diff --git a/packages/order-utils/package.json b/packages/order-utils/package.json
index cdb5b63b0..a7077f9b1 100644
--- a/packages/order-utils/package.json
+++ b/packages/order-utils/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/order-utils",
     "version": "0.0.4",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "0x order utils",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
diff --git a/packages/react-docs-example/package.json b/packages/react-docs-example/package.json
index b6b6c6c7d..3c8940f2d 100644
--- a/packages/react-docs-example/package.json
+++ b/packages/react-docs-example/package.json
@@ -2,6 +2,9 @@
     "private": true,
     "name": "@0xproject/react-docs-example",
     "version": "0.0.11",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "An example app using react-docs",
     "scripts": {
         "lint": "tslint --project .",
diff --git a/packages/react-docs/package.json b/packages/react-docs/package.json
index ca9ae610e..6be2acb35 100644
--- a/packages/react-docs/package.json
+++ b/packages/react-docs/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/react-docs",
     "version": "0.0.11",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "React documentation component for rendering TypeDoc & Doxity generated JSON",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
diff --git a/packages/react-shared/package.json b/packages/react-shared/package.json
index b9a46376c..1bc54f308 100644
--- a/packages/react-shared/package.json
+++ b/packages/react-shared/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/react-shared",
     "version": "0.1.6",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "0x shared react components",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
diff --git a/packages/sol-compiler/package.json b/packages/sol-compiler/package.json
index 19d390c32..72a5d0e53 100644
--- a/packages/sol-compiler/package.json
+++ b/packages/sol-compiler/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/sol-compiler",
     "version": "0.4.3",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "Solidity compiler wrapper and artifactor",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
diff --git a/packages/sol-cov/package.json b/packages/sol-cov/package.json
index 6268df4c7..e618f961c 100644
--- a/packages/sol-cov/package.json
+++ b/packages/sol-cov/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/sol-cov",
     "version": "0.0.10",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "Generate coverage reports for Solidity code",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
diff --git a/packages/sol-resolver/package.json b/packages/sol-resolver/package.json
index 6e4ba97e4..380decb73 100644
--- a/packages/sol-resolver/package.json
+++ b/packages/sol-resolver/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/sol-resolver",
     "version": "0.0.4",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "Import resolver for smart contracts dependencies",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
diff --git a/packages/sra-report/package.json b/packages/sra-report/package.json
index 1fc0d3ade..ebafc222b 100644
--- a/packages/sra-report/package.json
+++ b/packages/sra-report/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/sra-report",
     "version": "0.0.14",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "Generate reports for standard relayer API compliance",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
diff --git a/packages/subproviders/package.json b/packages/subproviders/package.json
index 92377f118..c127ad0f2 100644
--- a/packages/subproviders/package.json
+++ b/packages/subproviders/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/subproviders",
     "version": "0.10.1",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
     "license": "Apache-2.0",
diff --git a/packages/testnet-faucets/package.json b/packages/testnet-faucets/package.json
index 48fe77bf4..d1899e1b4 100644
--- a/packages/testnet-faucets/package.json
+++ b/packages/testnet-faucets/package.json
@@ -2,6 +2,9 @@
     "private": true,
     "name": "@0xproject/testnet-faucets",
     "version": "1.0.29",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "A faucet micro-service that dispenses test ERC20 tokens or Ether",
     "main": "server.js",
     "scripts": {
diff --git a/packages/tslint-config/package.json b/packages/tslint-config/package.json
index a5b34a35e..0f894cecc 100644
--- a/packages/tslint-config/package.json
+++ b/packages/tslint-config/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/tslint-config",
     "version": "0.4.17",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "Lint rules related to 0xProject for TSLint",
     "main": "tslint.json",
     "scripts": {
diff --git a/packages/types/package.json b/packages/types/package.json
index 973d5b8d0..55c961510 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/types",
     "version": "0.6.3",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "0x types",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
diff --git a/packages/typescript-typings/package.json b/packages/typescript-typings/package.json
index ad865854c..2e03ed5ea 100644
--- a/packages/typescript-typings/package.json
+++ b/packages/typescript-typings/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/typescript-typings",
     "version": "0.3.1",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "0x project typescript type definitions",
     "scripts": {
         "build": "tsc && copyfiles -u 1 './lib/**/*' ./scripts",
diff --git a/packages/utils/package.json b/packages/utils/package.json
index 0924aefc3..a1d8242a3 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/utils",
     "version": "0.6.1",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "0x TS utils",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
diff --git a/packages/web3-wrapper/package.json b/packages/web3-wrapper/package.json
index bc38df00d..d8cd38b18 100644
--- a/packages/web3-wrapper/package.json
+++ b/packages/web3-wrapper/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/web3-wrapper",
     "version": "0.6.3",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "description": "Wraps around web3 and gives a nicer interface",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
diff --git a/packages/website/package.json b/packages/website/package.json
index ad84a3eb9..9ec2b0ae5 100644
--- a/packages/website/package.json
+++ b/packages/website/package.json
@@ -1,6 +1,9 @@
 {
     "name": "@0xproject/website",
     "version": "0.0.32",
+    "engines": {
+        "node" : ">=8.0.0"
+    },
     "private": true,
     "description": "Website and 0x portal dapp",
     "scripts": {