Preserve number and string representation in json-stringify parser (#18405)

Co-authored-by: Alexander Kachkaev <alexander@kachkaev.ru>

changelog_unreleased/json/18405.md

@@ -0,0 +1,48 @@
+#### Preserve number and string representation in `json-stringify` parser (#18405 by @fisker)
+
+Previous versions of Prettier `json-stringify` parser used `JSON.stringify()` to print numbers and strings. This led to the loss of the original value representation in a few rare cases. For example, extremely large or small numbers were rounded, and some special characters were unescaped. Technically, these transformations do not change how JSON values are read, but they are not something a formatter [is concerned about](https://prettier.io/docs/rationale#strings). Prettier main now keeps the original representation, even if it can be simplified.
+
+<!-- prettier-ignore -->
+```jsonc
+// Input
+[
+  "\u00FF",
+  1e9999,
+  0.4e669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006,
+  -9223372036854775809,
+  1e3,
+  {
+    1e3: 1,
+    1e999999999999999999999999999999: 1,
+    1: 1
+  }
+]
+
+// Prettier stable
+[
+  "ÿ",
+  null,
+  null,
+  -9223372036854776000,
+  1000,
+  {
+    "1000": 1,
+    "Infinity": 1,
+    "1": 1
+  }
+]
+
+// Prettier main
+[
+  "\u00FF",
+  1e9999,
+  0.4e669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006,
+  -9223372036854775809,
+  1e3,
+  {
+    1e3: 1,
+    1e999999999999999999999999999999: 1,
+    "1": 1
+  }
+]
+```

docs/options.md

@@ -317,7 +317,7 @@ Valid options:
 - `"json"` (via [@babel/parser parseExpression](https://babeljs.io/docs/babel-parser#babelparserparseexpressioncode-options)) _First available in v1.5.0_
 - `"json5"` (same parser as `"json"`, but outputs as [json5](https://json5.org/)) _First available in v1.13.0_
 - `"jsonc"` (same parser as `"json"`, but outputs as "JSON with Comments") _First available in v3.2.0_
-- `"json-stringify"` (same parser as `"json"`, but outputs like `JSON.stringify`) _First available in v1.13.0_
+- `"json-stringify"` (parse like `JSON.parse()` except it's less strict, whitespace resembles `JSON.stringify()`) _First available in v1.13.0_
 - `"graphql"` (via [graphql/language](https://github.com/graphql/graphql-js/tree/master/src/language)) _First available in v1.5.0_
 - `"markdown"` (via [remark-parse](https://github.com/wooorm/remark/tree/main/packages/remark-parse)) _First available in v1.8.0_
 - `"mdx"` (via [remark-parse](https://github.com/wooorm/remark/tree/main/packages/remark-parse) and [@mdx-js/mdx](https://github.com/mdx-js/mdx/tree/master/packages/mdx)) _First available in v1.15.0_

src/language-json/printer-estree-json.js

@@ -1,4 +1,5 @@
 import { hardline, indent, join } from "../document/index.js";
+import printString from "../utilities/print-string.js";
 import UnexpectedNodeError from "../utilities/unexpected-node-error.js";
 
 function genericPrint(path, options, print) {
@@ -44,11 +45,17 @@ function genericPrint(path, options, print) {
     case "BooleanLiteral":
       return node.value ? "true" : "false";
     case "StringLiteral":
-      return JSON.stringify(node.value);
-    case "NumericLiteral":
-      return isObjectKey(path)
-        ? JSON.stringify(String(node.value))
-        : JSON.stringify(node.value);
+      return printString(getRaw(node), options);
+    case "NumericLiteral": {
+      // Intentionally to not use `printNumber`
+      // We may start stop support number normalization like the string print
+      const raw = getRaw(node);
+      if (isObjectKey(path) && String(Number(raw)) === raw) {
+        return `"${raw}"`;
+      }
+
+      return raw;
+    }
     case "Identifier":
       return isObjectKey(path) ? JSON.stringify(node.name) : node.name;
     case "TemplateLiteral":
@@ -62,6 +69,10 @@ function genericPrint(path, options, print) {
   }
 }
 
+function getRaw(node) {
+  return node.extra.raw;
+}
+
 function isObjectKey(path) {
   return path.key === "key" && path.parent.type === "ObjectProperty";
 }
@@ -69,7 +80,6 @@ function isObjectKey(path) {
 const ignoredProperties = new Set([
   "start",
   "end",
-  "extra",
   "loc",
   "comments",
   "leadingComments",
@@ -82,19 +92,45 @@ const ignoredProperties = new Set([
 
 function clean(original, cloned /* , parent*/) {
   const { type } = original;
+
   // We print quoted key
   if (type === "ObjectProperty") {
     const { key } = original;
     if (key.type === "Identifier") {
-      cloned.key = { type: "StringLiteral", value: key.name };
+      const { name } = key;
+      cloned.key = {
+        type: "StringLiteral",
+        value: name,
+        extra: { rawValue: name },
+      };
     } else if (key.type === "NumericLiteral") {
-      cloned.key = { type: "StringLiteral", value: String(key.value) };
+      const raw = getRaw(key);
+      if (String(Number(raw)) === raw) {
+        cloned.key = {
+          type: "StringLiteral",
+          value: raw,
+          extra: { rawValue: raw },
+        };
+      }
     }
-    return;
   }
+
+  if (type === "StringLiteral") {
+    // We only remove `\` before `"`, but it's hard to detect if it's escaped
+    delete cloned.extra.raw;
+  }
+
   if (type === "UnaryExpression" && original.operator === "+") {
     return cloned.argument;
   }
+
+  if (type === "ArrayExpression" || type === "ObjectExpression") {
+    cloned.extra ??= {};
+    if (original.extra?.trailingComma) {
+      delete cloned.extra.trailingComma;
+    }
+  }
+
   // We print holes in array as `null`
   if (type === "ArrayExpression") {
     for (const [index, element] of original.elements.entries()) {
@@ -106,7 +142,12 @@ function clean(original, cloned /* , parent*/) {
   }
   // We print `TemplateLiteral` as string
   if (type === "TemplateLiteral") {
-    return { type: "StringLiteral", value: original.quasis[0].value.cooked };
+    const value = original.quasis[0].value.cooked;
+    return {
+      type: "StringLiteral",
+      value,
+      extra: { rawValue: value },
+    };
   }
 }
 

src/utilities/print-string.js

@@ -15,6 +15,7 @@ function printString(raw, options) {
   const enclosingQuote =
     options.parser === "json" ||
     options.parser === "jsonc" ||
+    options.parser === "json-stringify" ||
     // This was added before we have the `jsonc` parser
     // If `{quoteProps: "preserve"}` and `{singleQuote: false}` (default value),
     // and `{parser: "json5"}`, double quotes are always used for strings.

tests/format/json/json-superset/format.test.js

@@ -56,11 +56,16 @@ runFormatTest(
       ...[...characters, LINE_FEED].map((character) => ({
         name: `json-stringify(\\${characterCode(character)})`,
         code: SINGLE_QUOTE + BACKSLASH + character + SINGLE_QUOTE,
-        output:
-          character === UNDERSCORE || character === SPACE
-            ? DOUBLE_QUOTE + character + DOUBLE_QUOTE + LINE_FEED
-            : DOUBLE_QUOTE + DOUBLE_QUOTE + LINE_FEED,
+        output: DOUBLE_QUOTE + BACKSLASH + character + DOUBLE_QUOTE + LINE_FEED,
       })),
+      ...[...characters, LINE_FEED].map((character) => {
+        const code = DOUBLE_QUOTE + BACKSLASH + character + DOUBLE_QUOTE;
+        return {
+          name: `json-stringify(\\${characterCode(character)})`,
+          code,
+          output: code + LINE_FEED,
+        };
+      }),
       ...characters.map((character) => ({
         name: `json-stringify(\\\\${characterCode(character)})`,
         code: SINGLE_QUOTE + BACKSLASH + BACKSLASH + character + SINGLE_QUOTE,

tests/format/json/json-test-suite/__snapshots__/format.test.js.snap

@@ -1,5 +1,443 @@
 // Jest Snapshot v1, https://jestjs.io/docs/snapshot-testing
 
+exports[`snippet: i_number_double_huge_neg_exp.json format 1`] = `
+====================================options=====================================
+parsers: ["json"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123.456e-789]
+=====================================output=====================================
+[123.456e-789]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_double_huge_neg_exp.json format 2`] = `
+====================================options=====================================
+parsers: ["jsonc"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123.456e-789]
+=====================================output=====================================
+[123.456e-789]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_double_huge_neg_exp.json format 3`] = `
+====================================options=====================================
+parsers: ["json5"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123.456e-789]
+=====================================output=====================================
+[123.456e-789]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_double_huge_neg_exp.json format 4`] = `
+====================================options=====================================
+parsers: ["json-stringify"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123.456e-789]
+=====================================output=====================================
+[
+  123.456e-789
+]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_huge_exp.json format 1`] = `
+====================================options=====================================
+parsers: ["json"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]
+=====================================output=====================================
+[
+  0.4e669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006
+]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_huge_exp.json format 2`] = `
+====================================options=====================================
+parsers: ["jsonc"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]
+=====================================output=====================================
+[
+  0.4e669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006,
+]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_huge_exp.json format 3`] = `
+====================================options=====================================
+parsers: ["json5"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]
+=====================================output=====================================
+[
+  0.4e669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006,
+]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_huge_exp.json format 4`] = `
+====================================options=====================================
+parsers: ["json-stringify"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]
+=====================================output=====================================
+[
+  0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006
+]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_neg_int_huge_exp.json format 1`] = `
+====================================options=====================================
+parsers: ["json"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-1e+9999]
+=====================================output=====================================
+[-1e9999]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_neg_int_huge_exp.json format 2`] = `
+====================================options=====================================
+parsers: ["jsonc"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-1e+9999]
+=====================================output=====================================
+[-1e9999]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_neg_int_huge_exp.json format 3`] = `
+====================================options=====================================
+parsers: ["json5"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-1e+9999]
+=====================================output=====================================
+[-1e9999]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_neg_int_huge_exp.json format 4`] = `
+====================================options=====================================
+parsers: ["json-stringify"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-1e+9999]
+=====================================output=====================================
+[
+  -1e+9999
+]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_pos_double_huge_exp.json format 1`] = `
+====================================options=====================================
+parsers: ["json"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[1.5e+9999]
+=====================================output=====================================
+[1.5e9999]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_pos_double_huge_exp.json format 2`] = `
+====================================options=====================================
+parsers: ["jsonc"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[1.5e+9999]
+=====================================output=====================================
+[1.5e9999]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_pos_double_huge_exp.json format 3`] = `
+====================================options=====================================
+parsers: ["json5"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[1.5e+9999]
+=====================================output=====================================
+[1.5e9999]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_pos_double_huge_exp.json format 4`] = `
+====================================options=====================================
+parsers: ["json-stringify"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[1.5e+9999]
+=====================================output=====================================
+[
+  1.5e+9999
+]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_neg_overflow.json format 1`] = `
+====================================options=====================================
+parsers: ["json"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-123123e100000]
+=====================================output=====================================
+[-123123e100000]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_neg_overflow.json format 2`] = `
+====================================options=====================================
+parsers: ["jsonc"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-123123e100000]
+=====================================output=====================================
+[-123123e100000]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_neg_overflow.json format 3`] = `
+====================================options=====================================
+parsers: ["json5"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-123123e100000]
+=====================================output=====================================
+[-123123e100000]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_neg_overflow.json format 4`] = `
+====================================options=====================================
+parsers: ["json-stringify"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-123123e100000]
+=====================================output=====================================
+[
+  -123123e100000
+]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_pos_overflow.json format 1`] = `
+====================================options=====================================
+parsers: ["json"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123123e100000]
+=====================================output=====================================
+[123123e100000]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_pos_overflow.json format 2`] = `
+====================================options=====================================
+parsers: ["jsonc"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123123e100000]
+=====================================output=====================================
+[123123e100000]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_pos_overflow.json format 3`] = `
+====================================options=====================================
+parsers: ["json5"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123123e100000]
+=====================================output=====================================
+[123123e100000]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_pos_overflow.json format 4`] = `
+====================================options=====================================
+parsers: ["json-stringify"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123123e100000]
+=====================================output=====================================
+[
+  123123e100000
+]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_underflow.json format 1`] = `
+====================================options=====================================
+parsers: ["json"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123e-10000000]
+=====================================output=====================================
+[123e-10000000]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_underflow.json format 2`] = `
+====================================options=====================================
+parsers: ["jsonc"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123e-10000000]
+=====================================output=====================================
+[123e-10000000]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_underflow.json format 3`] = `
+====================================options=====================================
+parsers: ["json5"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123e-10000000]
+=====================================output=====================================
+[123e-10000000]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_real_underflow.json format 4`] = `
+====================================options=====================================
+parsers: ["json-stringify"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[123e-10000000]
+=====================================output=====================================
+[
+  123e-10000000
+]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_too_big_neg_int.json format 1`] = `
+====================================options=====================================
+parsers: ["json"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-123123123123123123123123123123]
+=====================================output=====================================
+[-123123123123123123123123123123]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_too_big_neg_int.json format 2`] = `
+====================================options=====================================
+parsers: ["jsonc"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-123123123123123123123123123123]
+=====================================output=====================================
+[-123123123123123123123123123123]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_too_big_neg_int.json format 3`] = `
+====================================options=====================================
+parsers: ["json5"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-123123123123123123123123123123]
+=====================================output=====================================
+[-123123123123123123123123123123]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_too_big_neg_int.json format 4`] = `
+====================================options=====================================
+parsers: ["json-stringify"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-123123123123123123123123123123]
+=====================================output=====================================
+[
+  -123123123123123123123123123123
+]
+
+================================================================================
+`;
+
 exports[`snippet: i_number_too_big_pos_int.json format 1`] = `
 ====================================options=====================================
 parsers: ["json"]
@@ -54,6 +492,60 @@ printWidth: 80
 ================================================================================
 `;
 
+exports[`snippet: i_number_very_big_negative_int.json format 1`] = `
+====================================options=====================================
+parsers: ["json"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-237462374673276894279832749832423479823246327846]
+=====================================output=====================================
+[-237462374673276894279832749832423479823246327846]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_very_big_negative_int.json format 2`] = `
+====================================options=====================================
+parsers: ["jsonc"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-237462374673276894279832749832423479823246327846]
+=====================================output=====================================
+[-237462374673276894279832749832423479823246327846]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_very_big_negative_int.json format 3`] = `
+====================================options=====================================
+parsers: ["json5"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-237462374673276894279832749832423479823246327846]
+=====================================output=====================================
+[-237462374673276894279832749832423479823246327846]
+
+================================================================================
+`;
+
+exports[`snippet: i_number_very_big_negative_int.json format 4`] = `
+====================================options=====================================
+parsers: ["json-stringify"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+[-237462374673276894279832749832423479823246327846]
+=====================================output=====================================
+[
+  -237462374673276894279832749832423479823246327846
+]
+
+================================================================================
+`;
+
 exports[`snippet: i_object_key_lone_2nd_surrogate.json format 1`] = `
 ====================================options=====================================
 parsers: ["json"]
@@ -102,7 +594,7 @@ printWidth: 80
 {"\\uDFAA":0}
 =====================================output=====================================
 {
-  "\\udfaa": 0
+  "\\uDFAA": 0
 }
 
 ================================================================================
@@ -156,7 +648,7 @@ printWidth: 80
 ["\\uDADA"]
 =====================================output=====================================
 [
-  "\\udada"
+  "\\uDADA"
 ]
 
 ================================================================================
@@ -210,7 +702,7 @@ printWidth: 80
 ["\\uD888\\u1234"]
 =====================================output=====================================
 [
-  "\\ud888ሴ"
+  "\\uD888\\u1234"
 ]
 
 ================================================================================
@@ -372,7 +864,7 @@ printWidth: 80
 ["\\uD800\\n"]
 =====================================output=====================================
 [
-  "\\ud800\\n"
+  "\\uD800\\n"
 ]
 
 ================================================================================
@@ -426,7 +918,7 @@ printWidth: 80
 ["\\uDd1ea"]
 =====================================output=====================================
 [
-  "\\udd1ea"
+  "\\uDd1ea"
 ]
 
 ================================================================================
@@ -480,7 +972,7 @@ printWidth: 80
 ["\\uD800\\uD800\\n"]
 =====================================output=====================================
 [
-  "\\ud800\\ud800\\n"
+  "\\uD800\\uD800\\n"
 ]
 
 ================================================================================
@@ -696,7 +1188,7 @@ printWidth: 80
 ["\\uDd1e\\uD834"]
 =====================================output=====================================
 [
-  "\\udd1e\\ud834"
+  "\\uDd1e\\uD834"
 ]
 
 ================================================================================
@@ -804,7 +1296,7 @@ printWidth: 80
 ["\\uDFAA"]
 =====================================output=====================================
 [
-  "\\udfaa"
+  "\\uDFAA"
 ]
 
 ================================================================================
@@ -1280,7 +1772,7 @@ printWidth: 80
 
 =====================================output=====================================
 [
-  -9223372036854776000
+  -9223372036854775808
 ]
 
 ================================================================================
@@ -1296,7 +1788,7 @@ printWidth: 80
 
 =====================================output=====================================
 [
-  -9223372036854776000
+  -9223372036854775809
 ]
 
 ================================================================================
@@ -1354,7 +1846,7 @@ printWidth: 80
 
 =====================================output=====================================
 [
-  1
+  1.0
 ]
 
 ================================================================================
@@ -1412,7 +1904,7 @@ printWidth: 80
 
 =====================================output=====================================
 [
-  1
+  1.000000000000000005
 ]
 
 ================================================================================
@@ -1470,7 +1962,7 @@ printWidth: 80
 
 =====================================output=====================================
 [
-  0
+  1E-999
 ]
 
 ================================================================================
@@ -1528,7 +2020,7 @@ printWidth: 80
 
 =====================================output=====================================
 [
-  1000000
+  1E6
 ]
 
 ================================================================================
@@ -1686,7 +2178,7 @@ printWidth: 80
 
 =====================================output=====================================
 [
-  9223372036854776000
+  9223372036854775807
 ]
 
 ================================================================================
@@ -1702,7 +2194,7 @@ printWidth: 80
 
 =====================================output=====================================
 [
-  9223372036854776000
+  9223372036854775808
 ]
 
 ================================================================================
@@ -1760,7 +2252,7 @@ printWidth: 80
 
 =====================================output=====================================
 [
-  10000000000000000000
+  10000000000000000999
 ]
 
 ================================================================================
@@ -2093,7 +2585,7 @@ printWidth: 80
 ["\\uD800"]
 =====================================output=====================================
 [
-  "\\ud800"
+  "\\uD800"
 ]
 
 ================================================================================
@@ -2201,7 +2693,7 @@ printWidth: 80
 ["\\uD800\\uD800"]
 =====================================output=====================================
 [
-  "\\ud800\\ud800"
+  "\\uD800\\uD800"
 ]
 
 ================================================================================
@@ -2309,7 +2801,7 @@ printWidth: 80
 ["\\uD800\\uD800\\uD800"]
 =====================================output=====================================
 [
-  "\\ud800\\ud800\\ud800"
+  "\\uD800\\uD800\\uD800"
 ]
 
 ================================================================================
@@ -3074,7 +3566,7 @@ printWidth: 80
 [123e65]
 =====================================output=====================================
 [
-  1.23e+67
+  123e65
 ]
 
 ================================================================================
@@ -3128,7 +3620,7 @@ printWidth: 80
 [0e+1]
 =====================================output=====================================
 [
-  0
+  0e+1
 ]
 
 ================================================================================
@@ -3182,7 +3674,7 @@ printWidth: 80
 [0e1]
 =====================================output=====================================
 [
-  0
+  0e1
 ]
 
 ================================================================================
@@ -3300,7 +3792,7 @@ printWidth: 80
 
 =====================================output=====================================
 [
-  -1e-78
+  -0.000000000000000000000000000000000000000000000000000000000000000000000000000001
 ]
 
 ================================================================================
@@ -3354,7 +3846,7 @@ printWidth: 80
 [20e1]
 =====================================output=====================================
 [
-  200
+  20e1
 ]
 
 ================================================================================
@@ -3624,7 +4116,7 @@ printWidth: 80
 [1E22]
 =====================================output=====================================
 [
-  1e+22
+  1E22
 ]
 
 ================================================================================
@@ -3678,7 +4170,7 @@ printWidth: 80
 [1E-2]
 =====================================output=====================================
 [
-  0.01
+  1E-2
 ]
 
 ================================================================================
@@ -3732,7 +4224,7 @@ printWidth: 80
 [1E+2]
 =====================================output=====================================
 [
-  100
+  1E+2
 ]
 
 ================================================================================
@@ -3786,7 +4278,7 @@ printWidth: 80
 [123e45]
 =====================================output=====================================
 [
-  1.23e+47
+  123e45
 ]
 
 ================================================================================
@@ -3840,7 +4332,7 @@ printWidth: 80
 [123.456e78]
 =====================================output=====================================
 [
-  1.23456e+80
+  123.456e78
 ]
 
 ================================================================================
@@ -3894,7 +4386,7 @@ printWidth: 80
 [1e-2]
 =====================================output=====================================
 [
-  0.01
+  1e-2
 ]
 
 ================================================================================
@@ -3948,7 +4440,7 @@ printWidth: 80
 [1e+2]
 =====================================output=====================================
 [
-  100
+  1e+2
 ]
 
 ================================================================================
@@ -4489,8 +4981,8 @@ printWidth: 80
 { "min": -1.0e+28, "max": 1.0e+28 }
 =====================================output=====================================
 {
-  "min": -1e+28,
-  "max": 1e+28
+  "min": -1.0e+28,
+  "max": 1.0e+28
 }
 
 ================================================================================
@@ -4672,7 +5164,7 @@ printWidth: 80
 {"title":"\\u041f\\u043e\\u043b\\u0442\\u043e\\u0440\\u0430 \\u0417\\u0435\\u043c\\u043b\\u0435\\u043a\\u043e\\u043f\\u0430" }
 =====================================output=====================================
 {
-  "title": "Полтора Землекопа"
+  "title": "\\u041f\\u043e\\u043b\\u0442\\u043e\\u0440\\u0430 \\u0417\\u0435\\u043c\\u043b\\u0435\\u043a\\u043e\\u043f\\u0430"
 }
 
 ================================================================================
@@ -4794,7 +5286,7 @@ printWidth: 80
 ["\\u0060\\u012a\\u12AB"]
 =====================================output=====================================
 [
-  "\`Īካ"
+  "\\u0060\\u012a\\u12AB"
 ]
 
 ================================================================================
@@ -4848,7 +5340,7 @@ printWidth: 80
 ["\\uD801\\udc37"]
 =====================================output=====================================
 [
-  "𐐷"
+  "\\uD801\\udc37"
 ]
 
 ================================================================================
@@ -4902,7 +5394,7 @@ printWidth: 80
 ["\\ud83d\\ude39\\ud83d\\udc8d"]
 =====================================output=====================================
 [
-  "😹💍"
+  "\\ud83d\\ude39\\ud83d\\udc8d"
 ]
 
 ================================================================================
@@ -4956,7 +5448,7 @@ printWidth: 80
 ["\\"\\\\\\/\\b\\f\\n\\r\\t"]
 =====================================output=====================================
 [
-  "\\"\\\\/\\b\\f\\n\\r\\t"
+  "\\"\\\\\\/\\b\\f\\n\\r\\t"
 ]
 
 ================================================================================
@@ -5334,7 +5826,7 @@ printWidth: 80
 ["\\uFFFF"]
 =====================================output=====================================
 [
-  "￿"
+  "\\uFFFF"
 ]
 
 ================================================================================
@@ -5496,7 +5988,7 @@ printWidth: 80
 ["\\uDBFF\\uDFFF"]
 =====================================output=====================================
 [
-  "􏿿"
+  "\\uDBFF\\uDFFF"
 ]
 
 ================================================================================
@@ -5550,7 +6042,7 @@ printWidth: 80
 ["new\\u00A0line"]
 =====================================output=====================================
 [
-  "new line"
+  "new\\u00A0line"
 ]
 
 ================================================================================
@@ -5766,7 +6258,7 @@ printWidth: 80
 ["\\u002c"]
 =====================================output=====================================
 [
-  ","
+  "\\u002c"
 ]
 
 ================================================================================
@@ -6034,7 +6526,7 @@ printWidth: 80
 ["\\uD834\\uDd1e"]
 =====================================output=====================================
 [
-  "𝄞"
+  "\\uD834\\uDd1e"
 ]
 
 ================================================================================
@@ -6088,7 +6580,7 @@ printWidth: 80
 ["\\u0821"]
 =====================================output=====================================
 [
-  "ࠡ"
+  "\\u0821"
 ]
 
 ================================================================================
@@ -6142,7 +6634,7 @@ printWidth: 80
 ["\\u0123"]
 =====================================output=====================================
 [
-  "ģ"
+  "\\u0123"
 ]
 
 ================================================================================
@@ -6304,7 +6796,7 @@ printWidth: 80
 ["\\u0061\\u30af\\u30EA\\u30b9"]
 =====================================output=====================================
 [
-  "aクリス"
+  "\\u0061\\u30af\\u30EA\\u30b9"
 ]
 
 ================================================================================
@@ -6358,7 +6850,7 @@ printWidth: 80
 ["new\\u000Aline"]
 =====================================output=====================================
 [
-  "new\\nline"
+  "new\\u000Aline"
 ]
 
 ================================================================================
@@ -6466,7 +6958,7 @@ printWidth: 80
 ["\\uA66D"]
 =====================================output=====================================
 [
-  "ꙭ"
+  "\\uA66D"
 ]
 
 ================================================================================
@@ -6574,7 +7066,7 @@ printWidth: 80
 ["\\uD83F\\uDFFE"]
 =====================================output=====================================
 [
-  "🿾"
+  "\\uD83F\\uDFFE"
 ]
 
 ================================================================================
@@ -6628,7 +7120,7 @@ printWidth: 80
 ["\\uDBFF\\uDFFE"]
 =====================================output=====================================
 [
-  "􏿾"
+  "\\uDBFF\\uDFFE"
 ]
 
 ================================================================================
@@ -6682,7 +7174,7 @@ printWidth: 80
 ["\\u200B"]
 =====================================output=====================================
 [
-  "​"
+  "\\u200B"
 ]
 
 ================================================================================
@@ -6736,7 +7228,7 @@ printWidth: 80
 ["\\u2064"]
 =====================================output=====================================
 [
-  "⁤"
+  "\\u2064"
 ]
 
 ================================================================================
@@ -6790,7 +7282,7 @@ printWidth: 80
 ["\\uFDD0"]
 =====================================output=====================================
 [
-  "﷐"
+  "\\uFDD0"
 ]
 
 ================================================================================
@@ -6844,7 +7336,7 @@ printWidth: 80
 ["\\uFFFE"]
 =====================================output=====================================
 [
-  "￾"
+  "\\uFFFE"
 ]
 
 ================================================================================
@@ -6898,7 +7390,7 @@ printWidth: 80
 ["\\u0022"]
 =====================================output=====================================
 [
-  "\\""
+  "\\u0022"
 ]
 
 ================================================================================
@@ -6952,7 +7444,7 @@ printWidth: 80
 ["\\u005C"]
 =====================================output=====================================
 [
-  "\\\\"
+  "\\u005C"
 ]
 
 ================================================================================

tests/format/json/json-test-suite/format.test.js

@@ -10,21 +10,9 @@ const SKIP = new Set([
   "i_structure_500_nested_arrays.json",
 ]);
 
-const BUGS = new Set([
-  "i_number_neg_int_huge_exp.json",
-  "i_number_real_neg_overflow.json",
-  "i_number_double_huge_neg_exp.json",
-  "i_number_huge_exp.json",
-  "i_number_pos_double_huge_exp.json",
-  "i_number_real_pos_overflow.json",
-  "i_number_real_underflow.json",
-  "i_number_too_big_neg_int.json",
-  "i_number_very_big_negative_int.json",
-]);
-
 const cases = [...parsing, ...transform]
   .map(({ name, input, error }) => {
-    if (error || SKIP.has(name) || BUGS.has(name)) {
+    if (error || SKIP.has(name)) {
       return;
     }
 

tests/format/json/json/__snapshots__/format.test.js.snap

@@ -594,15 +594,16 @@ No \\\\n's!",
   },
   {
     "//": "JSON5 numbers",
-    "hexadecimal": 912559,
-    "leadingDecimalPoint": 0.8675309,
-    "andTrailing": 8675309,
+    "hexadecimal": 0xdecaf,
+    "leadingDecimalPoint": .8675309,
+    "andTrailing": 8675309.,
     "positiveSign": 1
   },
   {
     "//": "JSON5 strings",
     "singleQuotes": "I can use \\"double quotes\\" here",
-    "lineBreaks": "Look, Mom! No \\\\n's!"
+    "lineBreaks": "Look, Mom! \\
+No \\\\n's!"
   }
 ]
 
@@ -1237,35 +1238,35 @@ printWidth: 80
   {
     "//": "String escapes ",
     "data": [
-      "\\u0000",
-      "ÿ",
-      "ÿ",
+      "\\0",
+      "\\xFF",
+      "\\u00FF",
       "🐉"
     ]
   },
   {
     "//": "Numbers",
     "data": [
-      83,
-      42,
-      100000,
-      123456,
-      3740122863,
-      83,
+      0o123,
+      0b101010,
+      1e5,
+      123_456,
+      0xDeeD_Beef,
+      0123,
       -Infinity,
       -NaN,
       1,
       -1,
-      83,
-      42,
-      100000,
-      123456,
-      3740122863,
-      -83,
-      -42,
-      -100000,
-      -123456,
-      -3740122863
+      0o123,
+      0b101010,
+      1e5,
+      123_456,
+      0xDeeD_Beef,
+      -0o123,
+      -0b101010,
+      -1e5,
+      -123_456,
+      -0xDeeD_Beef
     ]
   },
   {
@@ -1537,8 +1538,8 @@ printWidth: 80
       1,
       2,
       "3",
-      10000000000,
-      0.001
+      1e10,
+      1e-3
     ]
   }
 }
@@ -2460,23 +2461,23 @@ printWidth: 80
   null,
   {
     "integer": 1234567890,
-    "real": -9876.54321,
-    "e": 1.23456789e-13,
-    "E": 1.23456789e+34,
-    "": 2.3456789012e+76,
+    "real": -9876.543210,
+    "e": 0.123456789e-12,
+    "E": 1.234567890E+34,
+    "": 23456789012E66,
     "zero": 0,
     "one": 1,
     "space": " ",
     "quote": "\\"",
     "backslash": "\\\\",
     "controls": "\\b\\f\\n\\r\\t",
-    "slash": "/ & /",
+    "slash": "/ & \\/",
     "alpha": "abcdefghijklmnopqrstuvwyz",
     "ALPHA": "ABCDEFGHIJKLMNOPQRSTUVWYZ",
     "digit": "0123456789",
     "0123456789": "digit",
     "special": "\`1~!@#$%^&*()_+-={':[,]}|;.</>?",
-    "hex": "ģ䕧覫췯ꯍ",
+    "hex": "\\u0123\\u4567\\u89AB\\uCDEF\\uabcd\\uef4A",
     "true": true,
     "false": false,
     "null": null,
@@ -2505,19 +2506,19 @@ printWidth: 80
       7
     ],
     "jsontext": "{\\"object with 1 member\\":[\\"array with 1 element\\"]}",
-    "quotes": "&#34; \\" %22 0x22 034 &#x22;",
-    "/\\\\\\"쫾몾ꮘﳞ볚\\b\\f\\n\\r\\t\`1~!@#$%^&*()_+-=[]{}|;:',./<>?": "A key can be any string"
+    "quotes": "&#34; \\u0022 %22 0x22 034 &#x22;",
+    "\\/\\\\\\"\\uCAFE\\uBABE\\uAB98\\uFCDE\\ubcda\\uef4A\\b\\f\\n\\r\\t\`1~!@#$%^&*()_+-=[]{}|;:',./<>?": "A key can be any string"
   },
   0.5,
   98.6,
   99.44,
   1066,
-  10,
-  1,
-  0.1,
-  1,
-  2,
-  2,
+  1e1,
+  0.1e1,
+  1e-1,
+  1e00,
+  2e+00,
+  2e-00,
   "rosebud"
 ]
 
@@ -2956,23 +2957,23 @@ printWidth: 80
   "true": "",
   "string": "",
   "0": "",
-  "100": "",
-  "100": "",
-  "10": "",
-  "0.01": "",
-  "0.001": "",
-  "10": "",
-  "1": "",
-  "1": "",
+  1e2: "",
+  1.0e+2: "",
+  .10e+2: "",
+  1e-2: "",
+  .1e-2: "",
+  0.1e+2: "",
+  1.0: "",
+  1.00000: "",
+  .1: "",
+  .100000: "",
   "0.1": "",
-  "0.1": "",
-  "0.1": "",
-  "0.1": "",
-  "1e+30": "",
-  "1e-30": "",
-  "1e-30": "",
-  "Infinity": "",
-  "123": ""
+  0.100000: "",
+  999999999999999999999999999999: "",
+  .000000000000000000000000000001: "",
+  0.000000000000000000000000000001: "",
+  1e999999999999999999999999999999: "",
+  1_2_3: ""
 }
 
 ================================================================================
@@ -3073,8 +3074,8 @@ printWidth: 80
       1,
       2,
       "3",
-      10000000000,
-      0.001
+      1e10,
+      1e-3
     ]
   }
 }