Throw an error when Amount or Fee contains a decimal (Fix #31)

Thanks to @jwbusch for review
2025-11-26 15:15:49 +00:00 · 2019-07-26 16:53:25 -07:00
parent b775a6f3c8
commit da5edb0b3b
15 changed files with 413 additions and 162 deletions
--- a/packages/ripple-binary-codec/package.json
+++ b/packages/ripple-binary-codec/package.json
@@ -23,7 +23,7 @@
  "devDependencies": {
    "babel-cli": "^6.8.0",
    "babel-core": "^6.8.0",
-    "babel-eslint": "^6.0.4",
+    "babel-eslint": "^10.0.2",
    "babel-loader": "^6.2.4",
    "babel-preset-es2015": "^6.6.0",
    "babel-register": "^6.8.0",
--- a/packages/ripple-binary-codec/src/types/amount.js
+++ b/packages/ripple-binary-codec/src/types/amount.js
@@ -57,7 +57,8 @@ function raiseIllegalAmountError(value) {

 const parsers = {
  string(str) {
-    if (!str.match(/\d+/)) {
+    // Using /^\d+$/ here fixes #31
+    if (!str.match(/^\d+$/)) {
      raiseIllegalAmountError(str);
    }
    return [new Decimal(str).dividedBy(DROPS_PER_XRP), Currency.XRP];
@@ -128,6 +129,7 @@ const Amount = makeClass({
          // value is in XRP scale, but show the value in canonical json form
          raiseIllegalAmountError(this.value.times(DROPS_PER_XRP))
        }
+        this.verifyNoDecimal(this.value); // This is a secondary fix for #31
      } else {
        const p = this.value.precision();
        const e = this.exponent();
@@ -143,8 +145,24 @@ const Amount = makeClass({
    return this.currency.isNative();
  },
  mantissa() {
+    // This is a tertiary fix for #31
+    const integerNumberString = this.verifyNoDecimal();
+
    return new UInt64(
-      new BN(this.value.times('1e' + -this.exponent()).abs().toString()));
+      new BN(integerNumberString));
+  },
+  verifyNoDecimal() {
+    const integerNumberString = this.value
+      .times('1e' + -this.exponent()).abs().toString();
+    // Ensure that the value (after being multiplied by the exponent)
+    // does not contain a decimal. From the bn.js README:
+    // "decimals are not supported in this library."
+    // eslint-disable-next-line max-len
+    // https://github.com/indutny/bn.js/blob/9cb459f044853b46615464eea1a3ddfc7006463b/README.md
+    if (integerNumberString.indexOf('.') !== -1) {
+      raiseIllegalAmountError(integerNumberString);
+    }
+    return integerNumberString;
  },
  isZero() {
    return this.value.isZero();
--- a/packages/ripple-binary-codec/test/tx-encode-decode-test.js
+++ b/packages/ripple-binary-codec/test/tx-encode-decode-test.js
@@ -0,0 +1,124 @@
+const assert = require('assert');
+const {
+  encode,
+  decode
+} = require('../src')
+
+// Notice: no Amount or Fee
+const tx_json = {
+  Account: 'r9LqNeG6qHxjeUocjvVki2XR35weJ9mZgQ',
+  // Amount: '1000',
+  Destination: 'rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh',
+  // Fee: '10',
+
+  // JavaScript converts operands to 32-bit signed ints after doing bitwise
+  // operations. We need to convert it back to an unsigned int with >>> 0.
+  Flags: ((1 << 31) >>> 0), // tfFullyCanonicalSig
+
+  Sequence: 1,
+  TransactionType: 'Payment'
+  // TxnSignature,
+  // Signature,
+  // SigningPubKey
+};
+
+const amount_parameters_message = input => {
+  // disables the ESLint rule on the whole rest of the file
+  /* eslint-disable max-len */
+  return `${input} is an illegal amount
+
+Native values must be described in drops, a million of which equal one XRP.
+This must be an integer number, with the absolute value not exceeding 100000000000000000
+
+IOU values must have a maximum precision of 16 significant digits. They are serialized as
+a canonicalised mantissa and exponent.
+
+The valid range for a mantissa is between 1000000000000000 and 9999999999999999
+The exponent must be >= -96 and <= 80
+
+Thus the largest serializable IOU value is:
+999999999999999900000000000000000000000000000000000000000000000000000000000000000000000000000000
+
+And the smallest:
+0.000000000000000000000000000000000000000000000000000000000000000000000000000000001
+`;
+};
+
+describe('encoding and decoding tx_json', function() {
+  it('can encode tx_json without Amount or Fee', function() {
+    const encoded = encode(tx_json);
+    const decoded = decode(encoded);
+    assert.deepStrictEqual(tx_json, decoded);
+  });
+  it('can encode tx_json with Amount and Fee', function() {
+    const my_tx = Object.assign({}, tx_json, {
+      Amount: '1000',
+      Fee: '10'
+    });
+    const encoded = encode(my_tx);
+    const decoded = decode(encoded);
+    assert.deepStrictEqual(my_tx, decoded);
+  });
+  it('throws when Amount is invalid', function() {
+    const my_tx = Object.assign({}, tx_json, {
+      Amount: '1000.001',
+      Fee: '10'
+    });
+    assert.throws(() => {
+      encode(my_tx);
+    }, {
+      name: 'Error',
+      message: amount_parameters_message('1000.001')
+    });
+  });
+  it('throws when Fee is invalid', function() {
+    const my_tx = Object.assign({}, tx_json, {
+      Amount: '1000',
+      Fee: '10.123'
+    });
+    assert.throws(() => {
+      encode(my_tx);
+    }, {
+      name: 'Error',
+      message: amount_parameters_message('10.123')
+    });
+  });
+  it('throws when Amount and Fee are invalid', function() {
+    const my_tx = Object.assign({}, tx_json, {
+      Amount: '1000.789',
+      Fee: '10.123'
+    });
+    assert.throws(() => {
+      encode(my_tx);
+    }, {
+      name: 'Error',
+      message: amount_parameters_message('1000.789')
+    });
+  });
+  it('throws when Amount is a number instead of a string-encoded integer',
+    function() {
+      const my_tx = Object.assign({}, tx_json, {
+        Amount: 1000.789
+      });
+      assert.throws(() => {
+        encode(my_tx);
+      },
+      {
+        name: 'Error',
+        message: 'unsupported value: 1000.789'
+      });
+    });
+  it('throws when Fee is a number instead of a string-encoded integer',
+    function() {
+      const my_tx = Object.assign({}, tx_json, {
+        Amount: 1234.56
+      });
+      assert.throws(() => {
+        encode(my_tx);
+      },
+      {
+        name: 'Error',
+        message: 'unsupported value: 1234.56'
+      });
+    });
+});
--- a/packages/ripple-binary-codec/yarn.lock
+++ b/packages/ripple-binary-codec/yarn.lock
@@ -2,6 +2,94 @@
 # yarn lockfile v1


+"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.5.5.tgz#bc0782f6d69f7b7d49531219699b988f669a8f9d"
+  integrity sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQag/ztrBC7wegWoQ1nLREPVSKSW8byhTlzTKyNE4ifaTA6lCp7JjpFw==
+  dependencies:
+    "@babel/highlight" "^7.0.0"
+
+"@babel/generator@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.5.5.tgz#873a7f936a3c89491b43536d12245b626664e3cf"
+  integrity sha512-ETI/4vyTSxTzGnU2c49XHv2zhExkv9JHLTwDAFz85kmcwuShvYG2H08FwgIguQf4JC75CBnXAUM5PqeF4fj0nQ==
+  dependencies:
+    "@babel/types" "^7.5.5"
+    jsesc "^2.5.1"
+    lodash "^4.17.13"
+    source-map "^0.5.0"
+    trim-right "^1.0.1"
+
+"@babel/helper-function-name@^7.1.0":
+  version "7.1.0"
+  resolved "https://registry.yarnpkg.com/@babel/helper-function-name/-/helper-function-name-7.1.0.tgz#a0ceb01685f73355d4360c1247f582bfafc8ff53"
+  integrity sha512-A95XEoCpb3TO+KZzJ4S/5uW5fNe26DjBGqf1o9ucyLyCmi1dXq/B3c8iaWTfBk3VvetUxl16e8tIrd5teOCfGw==
+  dependencies:
+    "@babel/helper-get-function-arity" "^7.0.0"
+    "@babel/template" "^7.1.0"
+    "@babel/types" "^7.0.0"
+
+"@babel/helper-get-function-arity@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/helper-get-function-arity/-/helper-get-function-arity-7.0.0.tgz#83572d4320e2a4657263734113c42868b64e49c3"
+  integrity sha512-r2DbJeg4svYvt3HOS74U4eWKsUAMRH01Z1ds1zx8KNTPtpTL5JAsdFv8BNyOpVqdFhHkkRDIg5B4AsxmkjAlmQ==
+  dependencies:
+    "@babel/types" "^7.0.0"
+
+"@babel/helper-split-export-declaration@^7.4.4":
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.4.4.tgz#ff94894a340be78f53f06af038b205c49d993677"
+  integrity sha512-Ro/XkzLf3JFITkW6b+hNxzZ1n5OQ80NvIUdmHspih1XAhtN3vPTuUFT4eQnela+2MaZ5ulH+iyP513KJrxbN7Q==
+  dependencies:
+    "@babel/types" "^7.4.4"
+
+"@babel/highlight@^7.0.0":
+  version "7.5.0"
+  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.5.0.tgz#56d11312bd9248fa619591d02472be6e8cb32540"
+  integrity sha512-7dV4eu9gBxoM0dAnj/BCFDW9LFU0zvTrkq0ugM7pnHEgguOEeOz1so2ZghEdzviYzQEED0r4EAgpsBChKy1TRQ==
+  dependencies:
+    chalk "^2.0.0"
+    esutils "^2.0.2"
+    js-tokens "^4.0.0"
+
+"@babel/parser@^7.0.0", "@babel/parser@^7.4.4", "@babel/parser@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.5.5.tgz#02f077ac8817d3df4a832ef59de67565e71cca4b"
+  integrity sha512-E5BN68cqR7dhKan1SfqgPGhQ178bkVKpXTPEXnFJBrEt8/DKRZlybmy+IgYLTeN7tp1R5Ccmbm2rBk17sHYU3g==
+
+"@babel/template@^7.1.0":
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.4.4.tgz#f4b88d1225689a08f5bc3a17483545be9e4ed237"
+  integrity sha512-CiGzLN9KgAvgZsnivND7rkA+AeJ9JB0ciPOD4U59GKbQP2iQl+olF1l76kJOupqidozfZ32ghwBEJDhnk9MEcw==
+  dependencies:
+    "@babel/code-frame" "^7.0.0"
+    "@babel/parser" "^7.4.4"
+    "@babel/types" "^7.4.4"
+
+"@babel/traverse@^7.0.0":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.5.5.tgz#f664f8f368ed32988cd648da9f72d5ca70f165bb"
+  integrity sha512-MqB0782whsfffYfSjH4TM+LMjrJnhCNEDMDIjeTpl+ASaUvxcjoiVCo/sM1GhS1pHOXYfWVCYneLjMckuUxDaQ==
+  dependencies:
+    "@babel/code-frame" "^7.5.5"
+    "@babel/generator" "^7.5.5"
+    "@babel/helper-function-name" "^7.1.0"
+    "@babel/helper-split-export-declaration" "^7.4.4"
+    "@babel/parser" "^7.5.5"
+    "@babel/types" "^7.5.5"
+    debug "^4.1.0"
+    globals "^11.1.0"
+    lodash "^4.17.13"
+
+"@babel/types@^7.0.0", "@babel/types@^7.4.4", "@babel/types@^7.5.5":
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.5.5.tgz#97b9f728e182785909aa4ab56264f090a028d18a"
+  integrity sha512-s63F9nJioLqOlW3UkyMd+BYhXt44YuaFm/VV0VwuteqjYwRrObkU7ra9pY4wAJR3oXi8hJrMcrcJdO/HH33vtw==
+  dependencies:
+    esutils "^2.0.2"
+    lodash "^4.17.13"
+    to-fast-properties "^2.0.0"
+
 abbrev@1:
  version "1.1.1"
  resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
@@ -232,16 +320,17 @@ babel-core@^6.26.0, babel-core@^6.8.0:
    slash "^1.0.0"
    source-map "^0.5.7"

-babel-eslint@^6.0.4:
-  version "6.1.2"
-  resolved "https://registry.yarnpkg.com/babel-eslint/-/babel-eslint-6.1.2.tgz#5293419fe3672d66598d327da9694567ba6a5f2f"
-  integrity sha1-UpNBn+NnLWZZjTJ9qWlFZ7pqXy8=
+babel-eslint@^10.0.2:
+  version "10.0.2"
+  resolved "https://registry.yarnpkg.com/babel-eslint/-/babel-eslint-10.0.2.tgz#182d5ac204579ff0881684b040560fdcc1558456"
+  integrity sha512-UdsurWPtgiPgpJ06ryUnuaSXC2s0WoSZnQmEpbAH65XZSdwowgN5MvyP7e88nW07FYXv72erVtpBkxyDVKhH1Q==
  dependencies:
-    babel-traverse "^6.0.20"
-    babel-types "^6.0.19"
-    babylon "^6.0.18"
-    lodash.assign "^4.0.0"
-    lodash.pickby "^4.0.0"
+    "@babel/code-frame" "^7.0.0"
+    "@babel/parser" "^7.0.0"
+    "@babel/traverse" "^7.0.0"
+    "@babel/types" "^7.0.0"
+    eslint-scope "3.7.1"
+    eslint-visitor-keys "^1.0.0"

 babel-generator@^6.26.0:
  version "6.26.1"
@@ -641,7 +730,7 @@ babel-template@^6.24.1, babel-template@^6.26.0:
    babylon "^6.18.0"
    lodash "^4.17.4"

-babel-traverse@^6.0.20, babel-traverse@^6.24.1, babel-traverse@^6.26.0:
+babel-traverse@^6.24.1, babel-traverse@^6.26.0:
  version "6.26.0"
  resolved "https://registry.yarnpkg.com/babel-traverse/-/babel-traverse-6.26.0.tgz#46a9cbd7edcc62c8e5c064e2d2d8d0f4035766ee"
  integrity sha1-RqnL1+3MYsjlwGTi0tjQ9ANXZu4=
@@ -656,7 +745,7 @@ babel-traverse@^6.0.20, babel-traverse@^6.24.1, babel-traverse@^6.26.0:
    invariant "^2.2.2"
    lodash "^4.17.4"

-babel-types@^6.0.19, babel-types@^6.19.0, babel-types@^6.24.1, babel-types@^6.26.0:
+babel-types@^6.19.0, babel-types@^6.24.1, babel-types@^6.26.0:
  version "6.26.0"
  resolved "https://registry.yarnpkg.com/babel-types/-/babel-types-6.26.0.tgz#a3b073f94ab49eb6fa55cd65227a334380632497"
  integrity sha1-o7Bz+Uq0nrb6Vc1lInozQ4BjJJc=
@@ -666,7 +755,7 @@ babel-types@^6.0.19, babel-types@^6.19.0, babel-types@^6.24.1, babel-types@^6.26
    lodash "^4.17.4"
    to-fast-properties "^1.0.3"

-babylon@^6.0.18, babylon@^6.18.0:
+babylon@^6.18.0:
  version "6.18.0"
  resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.18.0.tgz#af2f3b88fa6f5c1e4c634d1a0f8eac4f55b395e3"
  integrity sha512-q/UEjfGJ2Cm3oKV71DJz9d25TPnq5rhBVL2Q4fA5wcC3jcrdn7+SssEybFIxwAvvP+YCsCYNKughoF33GxgycQ==
@@ -1039,6 +1128,13 @@ debug@^3.1.0, debug@^3.2.6:
  dependencies:
    ms "^2.1.1"

+debug@^4.1.0:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
+  integrity sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==
+  dependencies:
+    ms "^2.1.1"
+
 decimal.js@^5.0.8:
  version "5.0.8"
  resolved "https://registry.yarnpkg.com/decimal.js/-/decimal.js-5.0.8.tgz#b48c3fb7d73a2d4d4940e0b38f1cd21db5b367ce"
@@ -1157,6 +1253,14 @@ escodegen@1.8.x:
  optionalDependencies:
    source-map "~0.2.0"

+eslint-scope@3.7.1:
+  version "3.7.1"
+  resolved "https://registry.yarnpkg.com/eslint-scope/-/eslint-scope-3.7.1.tgz#3d63c3edfda02e06e01a452ad88caacc7cdcb6e8"
+  integrity sha1-PWPD7f2gLgbgGkUq2IyqzHzctug=
+  dependencies:
+    esrecurse "^4.1.0"
+    estraverse "^4.1.1"
+
 eslint-scope@^3.7.1:
  version "3.7.3"
  resolved "https://registry.yarnpkg.com/eslint-scope/-/eslint-scope-3.7.3.tgz#bb507200d3d17f60247636160b4826284b108535"
@@ -1555,7 +1659,7 @@ glob@^7.1.2, glob@^7.1.3:
    once "^1.3.0"
    path-is-absolute "^1.0.0"

-globals@^11.0.1:
+globals@^11.0.1, globals@^11.1.0:
  version "11.12.0"
  resolved "https://registry.yarnpkg.com/globals/-/globals-11.12.0.tgz#ab8795338868a0babd8525758018c2a7eb95c42e"
  integrity sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA==
@@ -1992,7 +2096,7 @@ jade@0.26.3:
    commander "0.6.1"
    mkdirp "0.3.0"

-"js-tokens@^3.0.0 || ^4.0.0":
+"js-tokens@^3.0.0 || ^4.0.0", js-tokens@^4.0.0:
  version "4.0.0"
  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
  integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
@@ -2015,6 +2119,11 @@ jsesc@^1.3.0:
  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-1.3.0.tgz#46c3fec8c1892b12b0833db9bc7622176dbab34b"
  integrity sha1-RsP+yMGJKxKwgz25vHYiF226s0s=

+jsesc@^2.5.1:
+  version "2.5.2"
+  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-2.5.2.tgz#80564d2e483dacf6e8ef209650a67df3f0c283a4"
+  integrity sha512-OYu7XEzjkCQ3C5Ps3QIZsQfNpqoJyZZA99wd9aWd05NCtC5pWOkShK2mkL6HXQR6/Cy2lbNdPlZBpuQHXE63gA==
+
 jsesc@~0.5.0:
  version "0.5.0"
  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-0.5.0.tgz#e7dee66e35d6fc16f710fe91d5cf69f70f08911d"
@@ -2116,11 +2225,6 @@ lodash._getnative@^3.0.0:
  resolved "https://registry.yarnpkg.com/lodash._getnative/-/lodash._getnative-3.9.1.tgz#570bc7dede46d61cdcde687d65d3eecbaa3aaff5"
  integrity sha1-VwvH3t5G1hzc3mh9ZdPuy6o6r/U=

-lodash.assign@^4.0.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/lodash.assign/-/lodash.assign-4.2.0.tgz#0d99f3ccd7a6d261d19bdaeb9245005d285808e7"
-  integrity sha1-DZnzzNem0mHRm9rrkkUAXShYCOc=
-
 lodash.isarguments@^3.0.0:
  version "3.1.0"
  resolved "https://registry.yarnpkg.com/lodash.isarguments/-/lodash.isarguments-3.1.0.tgz#2f573d85c6a24289ff00663b491c1d338ff3458a"
@@ -2140,11 +2244,6 @@ lodash.keys@^3.0.0:
    lodash.isarguments "^3.0.0"
    lodash.isarray "^3.0.0"

-lodash.pickby@^4.0.0:
-  version "4.6.0"
-  resolved "https://registry.yarnpkg.com/lodash.pickby/-/lodash.pickby-4.6.0.tgz#7dea21d8c18d7703a27c704c15d3b84a67e33aff"
-  integrity sha1-feoh2MGNdwOifHBMFdO4SmfjOv8=
-
 lodash.toarray@^3.0.0:
  version "3.0.2"
  resolved "https://registry.yarnpkg.com/lodash.toarray/-/lodash.toarray-3.0.2.tgz#2b204f0fa4f51c285c6f00c81d1cea5a23041179"
@@ -2159,6 +2258,11 @@ lodash@^4.12.0, lodash@^4.17.4, lodash@^4.3.0:
  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.14.tgz#9ce487ae66c96254fe20b599f21b6816028078ba"
  integrity sha512-mmKYbW3GLuJeX+iGP+Y7Gp1AiGHGbXHCOh/jZmrawMmsE7MS4znI3RL2FsjbqOyMayHInjOeykW7PEajUk1/xw==

+lodash@^4.17.13:
+  version "4.17.15"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
+  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
+
 loose-envify@^1.0.0:
  version "1.4.0"
  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
@@ -3072,7 +3176,7 @@ source-map-url@^0.4.0:
  resolved "https://registry.yarnpkg.com/source-map-url/-/source-map-url-0.4.0.tgz#3e935d7ddd73631b97659956d55128e87b5084a3"
  integrity sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM=

-source-map@^0.5.6, source-map@^0.5.7:
+source-map@^0.5.0, source-map@^0.5.6, source-map@^0.5.7:
  version "0.5.7"
  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
  integrity sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=
@@ -3261,6 +3365,11 @@ to-fast-properties@^1.0.3:
  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
  integrity sha1-uDVx+k2MJbguIxsG46MFXeTKGkc=

+to-fast-properties@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-2.0.0.tgz#dc5e698cbd079265bc73e0377681a4e4e83f616e"
+  integrity sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4=
+
 to-object-path@^0.3.0:
  version "0.3.0"
  resolved "https://registry.yarnpkg.com/to-object-path/-/to-object-path-0.3.0.tgz#297588b7b0e7e0ac08e04e672f85c1f4999e17af"