Merge remote-tracking branch 'origin/feat/codemirror'

helpers/codegen/codegen.ts

@@ -150,8 +150,6 @@ function getCodegenGeneralRESTInfo(
           .map((x) => ({ ...x, active: true }))
       : request.effectiveFinalHeaders.map((x) => ({ ...x, active: true }))
 
-  console.log(finalHeaders)
-
   return {
     name: request.name,
     uri: request.effectiveFinalURL,

helpers/editor/codemirror.ts

@@ -0,0 +1,215 @@
+import CodeMirror from "codemirror"
+
+import "codemirror-theme-github/theme/github.css"
+import "codemirror/theme/base16-dark.css"
+import "codemirror/theme/tomorrow-night-bright.css"
+
+import "codemirror/lib/codemirror.css"
+import "codemirror/addon/lint/lint.css"
+import "codemirror/addon/dialog/dialog.css"
+import "codemirror/addon/hint/show-hint.css"
+
+import "codemirror/addon/fold/foldgutter.css"
+import "codemirror/addon/fold/foldgutter"
+import "codemirror/addon/fold/brace-fold"
+import "codemirror/addon/fold/comment-fold"
+import "codemirror/addon/fold/indent-fold"
+import "codemirror/addon/display/autorefresh"
+import "codemirror/addon/lint/lint"
+import "codemirror/addon/hint/show-hint"
+import "codemirror/addon/display/placeholder"
+import "codemirror/addon/edit/closebrackets"
+import "codemirror/addon/search/search"
+import "codemirror/addon/search/searchcursor"
+import "codemirror/addon/search/jump-to-line"
+import "codemirror/addon/dialog/dialog"
+import "codemirror/addon/selection/active-line"
+
+import { watch, onMounted, ref, Ref, useContext } from "@nuxtjs/composition-api"
+import { LinterDefinition } from "./linting/linter"
+import { Completer } from "./completion"
+
+type CodeMirrorOptions = {
+  extendedEditorConfig: Omit<CodeMirror.EditorConfiguration, "value">
+  linter: LinterDefinition | null
+  completer: Completer | null
+}
+
+const DEFAULT_EDITOR_CONFIG: CodeMirror.EditorConfiguration = {
+  autoRefresh: true,
+  lineNumbers: true,
+  foldGutter: true,
+  autoCloseBrackets: true,
+  gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"],
+  extraKeys: {
+    "Ctrl-Space": "autocomplete",
+  },
+  viewportMargin: Infinity,
+  styleActiveLine: true,
+}
+
+/**
+ * A Vue composable to mount and use Codemirror
+ *
+ * NOTE: Make sure to import all the necessary Codemirror modules,
+ * as this function doesn't import any other than the core
+ * @param el Reference to the dom node to attach to
+ * @param value Reference to value to read/write to
+ * @param options CodeMirror options to pass
+ */
+export function useCodemirror(
+  el: Ref<any | null>,
+  value: Ref<string>,
+  options: CodeMirrorOptions
+): { cm: Ref<CodeMirror.Position | null>; cursor: Ref<CodeMirror.Position> } {
+  const { $colorMode } = useContext() as any
+
+  const cm = ref<CodeMirror.Editor | null>(null)
+  const cursor = ref<CodeMirror.Position>({ line: 0, ch: 0 })
+
+  const updateEditorConfig = () => {
+    Object.keys(options.extendedEditorConfig).forEach((key) => {
+      // Only update options which need updating
+      if (
+        cm.value &&
+        cm.value?.getOption(key as any) !==
+          (options.extendedEditorConfig as any)[key]
+      ) {
+        cm.value?.setOption(
+          key as any,
+          (options.extendedEditorConfig as any)[key]
+        )
+      }
+    })
+  }
+
+  const updateLinterConfig = () => {
+    if (options.linter) {
+      cm.value?.setOption("lint", options.linter)
+    }
+  }
+
+  const updateCompleterConfig = () => {
+    if (options.completer) {
+      cm.value?.setOption("hintOptions", {
+        completeSingle: false,
+        hint: async (editor: CodeMirror.Editor) => {
+          const pos = editor.getCursor()
+          const text = editor.getValue()
+
+          const token = editor.getTokenAt(pos)
+          // It's not a word token, so, just increment to skip to next
+          if (token.string.toUpperCase() === token.string.toLowerCase())
+            token.start += 1
+
+          const result = await options.completer!(text, pos)
+
+          if (!result) return null
+
+          return <CodeMirror.Hints>{
+            from: { line: pos.line, ch: token.start },
+            to: { line: pos.line, ch: token.end },
+            list: result.completions
+              .sort((a, b) => a.score - b.score)
+              .map((x) => x.text),
+          }
+        },
+      })
+    }
+  }
+
+  const initialize = () => {
+    if (!el.value) return
+
+    cm.value = CodeMirror(el.value!, DEFAULT_EDITOR_CONFIG)
+
+    cm.value.setValue(value.value)
+
+    setTheme()
+    updateEditorConfig()
+    updateLinterConfig()
+    updateCompleterConfig()
+
+    cm.value.on("change", (instance) => {
+      // External update propagation (via watchers) should be ignored
+      if (instance.getValue() !== value.value) {
+        value.value = instance.getValue()
+      }
+    })
+
+    cm.value.on("cursorActivity", (instance) => {
+      cursor.value = instance.getCursor()
+    })
+  }
+
+  // Boot-up CodeMirror, set the value and listeners
+  onMounted(() => {
+    initialize()
+  })
+
+  // Reinitialize if the target ref updates
+  watch(el, () => {
+    if (cm.value) {
+      const parent = cm.value.getWrapperElement()
+      parent.remove()
+      cm.value = null
+    }
+    initialize()
+  })
+
+  const setTheme = () => {
+    if (cm.value) {
+      cm.value?.setOption("theme", getThemeName($colorMode.value))
+    }
+  }
+
+  const getThemeName = (mode: string) => {
+    switch (mode) {
+      case "system":
+        return "default"
+      case "light":
+        return "github"
+      case "dark":
+        return "base16-dark"
+      case "black":
+        return "tomorrow-night-bright"
+      default:
+        return "default"
+    }
+  }
+
+  // If the editor properties are reactive, watch for updates
+  watch(() => options.extendedEditorConfig, updateEditorConfig, {
+    immediate: true,
+    deep: true,
+  })
+  watch(() => options.linter, updateLinterConfig, { immediate: true })
+  watch(() => options.completer, updateCompleterConfig, { immediate: true })
+
+  // Watch value updates
+  watch(value, (newVal) => {
+    // Check if we are mounted
+    if (cm.value) {
+      // Don't do anything on internal updates
+      if (cm.value.getValue() !== newVal) {
+        cm.value.setValue(newVal)
+      }
+    }
+  })
+
+  // Push cursor updates
+  watch(cursor, (value) => {
+    if (value !== cm.value?.getCursor()) {
+      cm.value?.focus()
+      cm.value?.setCursor(value)
+    }
+  })
+
+  // Watch color mode updates and update theme
+  watch(() => $colorMode.value, setTheme)
+
+  return {
+    cm,
+    cursor,
+  }
+}

helpers/editor/completion/gqlQuery.ts

@@ -0,0 +1,27 @@
+import { Ref } from "@nuxtjs/composition-api"
+import { GraphQLSchema } from "graphql"
+import { getAutocompleteSuggestions } from "graphql-language-service-interface"
+import { Completer, CompleterResult, CompletionEntry } from "."
+
+const completer: (schemaRef: Ref<GraphQLSchema | null>) => Completer =
+  (schemaRef: Ref<GraphQLSchema | null>) => (text, completePos) => {
+    if (!schemaRef.value) return Promise.resolve(null)
+
+    const completions = getAutocompleteSuggestions(schemaRef.value, text, {
+      line: completePos.line,
+      character: completePos.ch,
+    } as any)
+
+    return Promise.resolve(<CompleterResult>{
+      completions: completions.map(
+        (x, i) =>
+          <CompletionEntry>{
+            text: x.label!,
+            meta: x.detail!,
+            score: completions.length - i,
+          }
+      ),
+    })
+  }
+
+export default completer

helpers/editor/completion/index.ts

@@ -0,0 +1,23 @@
+export type CompletionEntry = {
+  text: string
+  meta: string
+  score: number
+}
+
+export type CompleterResult = {
+  /**
+   * List of completions to display
+   */
+  completions: CompletionEntry[]
+}
+
+export type Completer = (
+  /**
+   * The contents of the editor
+   */
+  text: string,
+  /**
+   * Position where the completer is fired
+   */
+  completePos: { line: number; ch: number }
+) => Promise<CompleterResult | null>

helpers/editor/completion/preRequest.ts

@@ -0,0 +1,24 @@
+import { Completer, CompletionEntry } from "."
+import { getPreRequestScriptCompletions } from "~/helpers/tern"
+
+const completer: Completer = async (text, completePos) => {
+  const results = await getPreRequestScriptCompletions(
+    text,
+    completePos.line,
+    completePos.ch
+  )
+
+  const completions = results.completions.map((completion: any, i: number) => {
+    return <CompletionEntry>{
+      text: completion.name,
+      meta: completion.isKeyword ? "keyword" : completion.type,
+      score: results.completions.length - i,
+    }
+  })
+
+  return {
+    completions,
+  }
+}
+
+export default completer

helpers/editor/completion/testScript.ts

@@ -0,0 +1,24 @@
+import { Completer, CompletionEntry } from "."
+import { getTestScriptCompletions } from "~/helpers/tern"
+
+export const completer: Completer = async (text, completePos) => {
+  const results = await getTestScriptCompletions(
+    text,
+    completePos.line,
+    completePos.ch
+  )
+
+  const completions = results.completions.map((completion: any, i: number) => {
+    return <CompletionEntry>{
+      text: completion.name,
+      meta: completion.isKeyword ? "keyword" : completion.type,
+      score: results.completions.length - i,
+    }
+  })
+
+  return {
+    completions,
+  }
+}
+
+export default completer

helpers/editor/linting/gqlQuery.ts

@@ -0,0 +1,58 @@
+import { Ref } from "@nuxtjs/composition-api"
+import {
+  GraphQLError,
+  GraphQLSchema,
+  parse as gqlParse,
+  validate as gqlValidate,
+} from "graphql"
+import { LinterDefinition, LinterResult } from "./linter"
+
+/**
+ * Creates a Linter function that can lint a GQL query against a given
+ * schema
+ */
+export const createGQLQueryLinter: (
+  schema: Ref<GraphQLSchema | null>
+) => LinterDefinition = (schema: Ref<GraphQLSchema | null>) => (text) => {
+  if (text === "") return Promise.resolve([])
+  if (!schema.value) return Promise.resolve([])
+
+  try {
+    const doc = gqlParse(text)
+
+    const results = gqlValidate(schema.value, doc).map(
+      ({ locations, message }) =>
+        <LinterResult>{
+          from: {
+            line: locations![0].line - 1,
+            ch: locations![0].column - 1,
+          },
+          to: {
+            line: locations![0].line - 1,
+            ch: locations![0].column,
+          },
+          message,
+          severity: "error",
+        }
+    )
+
+    return Promise.resolve(results)
+  } catch (e) {
+    const err = e as GraphQLError
+
+    return Promise.resolve([
+      <LinterResult>{
+        from: {
+          line: err.locations![0].line - 1,
+          ch: err.locations![0].column - 1,
+        },
+        to: {
+          line: err.locations![0].line - 1,
+          ch: err.locations![0].column,
+        },
+        message: err.message,
+        severity: "error",
+      },
+    ])
+  }
+}

helpers/editor/linting/json.ts

@@ -0,0 +1,21 @@
+import { convertIndexToLineCh } from "../utils"
+import { LinterDefinition, LinterResult } from "./linter"
+import jsonParse from "~/helpers/jsonParse"
+
+const linter: LinterDefinition = (text) => {
+  try {
+    jsonParse(text)
+    return Promise.resolve([])
+  } catch (e: any) {
+    return Promise.resolve([
+      <LinterResult>{
+        from: convertIndexToLineCh(text, e.start),
+        to: convertIndexToLineCh(text, e.end),
+        message: e.message,
+        severity: "error",
+      },
+    ])
+  }
+}
+
+export default linter

helpers/editor/linting/linter.ts

@@ -0,0 +1,7 @@
+export type LinterResult = {
+  message: string
+  severity: "warning" | "error"
+  from: { line: number; ch: number }
+  to: { line: number; ch: number }
+}
+export type LinterDefinition = (text: string) => Promise<LinterResult[]>

helpers/editor/linting/preRequest.ts

@@ -0,0 +1,69 @@
+import * as esprima from "esprima"
+import { LinterDefinition, LinterResult } from "./linter"
+import { performPreRequestLinting } from "~/helpers/tern"
+
+const linter: LinterDefinition = async (text) => {
+  let results: LinterResult[] = []
+
+  // Semantic linting
+  const semanticLints = await performPreRequestLinting(text)
+
+  results = results.concat(
+    semanticLints.map((lint: any) => ({
+      from: lint.from,
+      to: lint.to,
+      severity: "error",
+      message: `[semantic] ${lint.message}`,
+    }))
+  )
+
+  // Syntax linting
+  try {
+    const res: any = esprima.parseScript(text, { tolerant: true })
+    if (res.errors && res.errors.length > 0) {
+      results = results.concat(
+        res.errors.map((err: any) => {
+          const fromPos: { line: number; ch: number } = {
+            line: err.lineNumber - 1,
+            ch: err.column - 1,
+          }
+
+          const toPos: { line: number; ch: number } = {
+            line: err.lineNumber - 1,
+            ch: err.column,
+          }
+
+          return <LinterResult>{
+            from: fromPos,
+            to: toPos,
+            message: `[syntax] ${err.description}`,
+            severity: "error",
+          }
+        })
+      )
+    }
+  } catch (e) {
+    const fromPos: { line: number; ch: number } = {
+      line: e.lineNumber - 1,
+      ch: e.column - 1,
+    }
+
+    const toPos: { line: number; ch: number } = {
+      line: e.lineNumber - 1,
+      ch: e.column,
+    }
+
+    results = results.concat([
+      <LinterResult>{
+        from: fromPos,
+        to: toPos,
+        message: `[syntax] ${e.description}`,
+        severity: "error",
+      },
+    ])
+  }
+
+  return results
+}
+
+export default linter

helpers/editor/linting/testScript.ts

@@ -0,0 +1,69 @@
+import * as esprima from "esprima"
+import { LinterDefinition, LinterResult } from "./linter"
+import { performTestLinting } from "~/helpers/tern"
+
+const linter: LinterDefinition = async (text) => {
+  let results: LinterResult[] = []
+
+  // Semantic linting
+  const semanticLints = await performTestLinting(text)
+
+  results = results.concat(
+    semanticLints.map((lint: any) => ({
+      from: lint.from,
+      to: lint.to,
+      severity: "error",
+      message: `[semantic] ${lint.message}`,
+    }))
+  )
+
+  // Syntax linting
+  try {
+    const res: any = esprima.parseScript(text, { tolerant: true })
+    if (res.errors && res.errors.length > 0) {
+      results = results.concat(
+        res.errors.map((err: any) => {
+          const fromPos: { line: number; ch: number } = {
+            line: err.lineNumber - 1,
+            ch: err.column - 1,
+          }
+
+          const toPos: { line: number; ch: number } = {
+            line: err.lineNumber - 1,
+            ch: err.column,
+          }
+
+          return <LinterResult>{
+            from: fromPos,
+            to: toPos,
+            message: `[syntax] ${err.description}`,
+            severity: "error",
+          }
+        })
+      )
+    }
+  } catch (e) {
+    const fromPos: { line: number; ch: number } = {
+      line: e.lineNumber - 1,
+      ch: e.column - 1,
+    }
+
+    const toPos: { line: number; ch: number } = {
+      line: e.lineNumber - 1,
+      ch: e.column,
+    }
+
+    results = results.concat([
+      <LinterResult>{
+        from: fromPos,
+        to: toPos,
+        message: `[syntax] ${e.description}`,
+        severity: "error",
+      },
+    ])
+  }
+
+  return results
+}
+
+export default linter

helpers/editor/modes/graphql.ts

@@ -0,0 +1,80 @@
+/**
+ *  Copyright (c) 2021 GraphQL Contributors
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+import CodeMirror from "codemirror"
+import {
+  LexRules,
+  ParseRules,
+  isIgnored,
+  onlineParser,
+  State,
+} from "graphql-language-service-parser"
+
+/**
+ * The GraphQL mode is defined as a tokenizer along with a list of rules, each
+ * of which is either a function or an array.
+ *
+ *   * Function: Provided a token and the stream, returns an expected next step.
+ *   * Array: A list of steps to take in order.
+ *
+ * A step is either another rule, or a terminal description of a token. If it
+ * is a rule, that rule is pushed onto the stack and the parsing continues from
+ * that point.
+ *
+ * If it is a terminal description, the token is checked against it using a
+ * `match` function. If the match is successful, the token is colored and the
+ * rule is stepped forward. If the match is unsuccessful, the remainder of the
+ * rule is skipped and the previous rule is advanced.
+ *
+ * This parsing algorithm allows for incremental online parsing within various
+ * levels of the syntax tree and results in a structured `state` linked-list
+ * which contains the relevant information to produce valuable typeaheads.
+ */
+CodeMirror.defineMode("graphql", (config) => {
+  const parser = onlineParser({
+    eatWhitespace: (stream) => stream.eatWhile(isIgnored),
+    lexRules: LexRules,
+    parseRules: ParseRules,
+    editorConfig: { tabSize: 2 },
+  })
+
+  return {
+    config,
+    startState: parser.startState,
+    token: parser.token as unknown as CodeMirror.Mode<any>["token"], // TODO: Check if the types are indeed compatible
+    indent,
+    electricInput: /^\s*[})\]]/,
+    fold: "brace",
+    lineComment: "#",
+    closeBrackets: {
+      pairs: '()[]{}""',
+      explode: "()[]{}",
+    },
+  }
+})
+
+// Seems the electricInput type in @types/codemirror is wrong (i.e it is written as electricinput instead of electricInput)
+function indent(
+  this: CodeMirror.Mode<any> & {
+    electricInput?: RegExp
+    config?: CodeMirror.EditorConfiguration
+  },
+  state: State,
+  textAfter: string
+) {
+  const levels = state.levels
+  // If there is no stack of levels, use the current level.
+  // Otherwise, use the top level, pre-emptively dedenting for close braces.
+  const level =
+    !levels || levels.length === 0
+      ? state.indentLevel
+      : levels[levels.length - 1] -
+        (this.electricInput?.test(textAfter) ? 1 : 0)
+  return (level || 0) * (this.config?.indentUnit || 0)
+}

helpers/editor/utils.ts

@@ -0,0 +1,38 @@
+export function convertIndexToLineCh(
+  text: string,
+  i: number
+): { line: number; ch: number } {
+  const lines = text.split("\n")
+
+  let line = 0
+  let counter = 0
+
+  while (line < lines.length) {
+    if (i > lines[line].length + counter) {
+      counter += lines[line].length + 1
+      line++
+    } else {
+      return {
+        line: line + 1,
+        ch: i - counter + 1,
+      }
+    }
+  }
+
+  throw new Error("Invalid input")
+}
+
+export function convertLineChToIndex(
+  text: string,
+  lineCh: { line: number; ch: number }
+): number {
+  const textSplit = text.split("\n")
+
+  if (textSplit.length < lineCh.line) throw new Error("Invalid position")
+
+  const tillLineIndex = textSplit
+    .slice(0, lineCh.line)
+    .reduce((acc, line) => acc + line.length + 1, 0)
+
+  return tillLineIndex + lineCh.ch
+}

helpers/editorutils.js

@@ -1,12 +1,12 @@
 const mimeToMode = {
-  "text/plain": "plain_text",
-  "text/html": "html",
-  "application/xml": "xml",
-  "application/hal+json": "json",
-  "application/vnd.api+json": "json",
-  "application/json": "json",
+  "text/plain": "text/x-yaml",
+  "text/html": "htmlmixed",
+  "application/xml": "application/xml",
+  "application/hal+json": "application/ld+json",
+  "application/vnd.api+json": "application/ld+json",
+  "application/json": "application/ld+json",
 }
 
 export function getEditorLangForMimeType(mimeType) {
-  return mimeToMode[mimeType] || "plain_text"
+  return mimeToMode[mimeType] || "text/x-yaml"
 }

helpers/jsonParse.ts

@@ -19,7 +19,75 @@
  *   - end: int - the end exclusive offset of the syntax error
  *
  */
-export default function jsonParse(str) {
+type JSONEOFValue = {
+  kind: "EOF"
+  start: number
+  end: number
+}
+
+type JSONNullValue = {
+  kind: "Null"
+  start: number
+  end: number
+}
+
+type JSONNumberValue = {
+  kind: "Number"
+  start: number
+  end: number
+  value: number
+}
+
+type JSONStringValue = {
+  kind: "String"
+  start: number
+  end: number
+  value: string
+}
+
+type JSONBooleanValue = {
+  kind: "Boolean"
+  start: number
+  end: number
+  value: boolean
+}
+
+type JSONPrimitiveValue =
+  | JSONNullValue
+  | JSONEOFValue
+  | JSONStringValue
+  | JSONNumberValue
+  | JSONBooleanValue
+
+export type JSONObjectValue = {
+  kind: "Object"
+  start: number
+  end: number
+  // eslint-disable-next-line no-use-before-define
+  members: JSONObjectMember[]
+}
+
+export type JSONArrayValue = {
+  kind: "Array"
+  start: number
+  end: number
+  // eslint-disable-next-line no-use-before-define
+  values: JSONValue[]
+}
+
+export type JSONValue = JSONObjectValue | JSONArrayValue | JSONPrimitiveValue
+
+export type JSONObjectMember = {
+  kind: "Member"
+  start: number
+  end: number
+  key: JSONStringValue
+  value: JSONValue
+}
+
+export default function jsonParse(
+  str: string
+): JSONObjectValue | JSONArrayValue {
   string = str
   strLen = str.length
   start = end = lastEnd = -1
@@ -37,15 +105,15 @@ export default function jsonParse(str) {
   }
 }
 
-let string
-let strLen
-let start
-let end
-let lastEnd
-let code
-let kind
+let string: string
+let strLen: number
+let start: number
+let end: number
+let lastEnd: number
+let code: number
+let kind: string
 
-function parseObj() {
+function parseObj(): JSONObjectValue {
   const nodeStart = start
   const members = []
   expect("{")
@@ -63,9 +131,9 @@ function parseObj() {
   }
 }
 
-function parseMember() {
+function parseMember(): JSONObjectMember {
   const nodeStart = start
-  const key = kind === "String" ? curToken() : null
+  const key = kind === "String" ? (curToken() as JSONStringValue) : null
   expect("String")
   expect(":")
   const value = parseVal()
@@ -73,14 +141,14 @@ function parseMember() {
     kind: "Member",
     start: nodeStart,
     end: lastEnd,
-    key,
+    key: key!,
     value,
   }
 }
 
-function parseArr() {
+function parseArr(): JSONArrayValue {
   const nodeStart = start
-  const values = []
+  const values: JSONValue[] = []
   expect("[")
   if (!skip("]")) {
     do {
@@ -96,7 +164,7 @@ function parseArr() {
   }
 }
 
-function parseVal() {
+function parseVal(): JSONValue {
   switch (kind) {
     case "[":
       return parseArr()
@@ -111,14 +179,19 @@ function parseVal() {
       lex()
       return token
   }
-  return expect("Value")
+  return expect("Value") as never
 }
 
-function curToken() {
-  return { kind, start, end, value: JSON.parse(string.slice(start, end)) }
+function curToken(): JSONPrimitiveValue {
+  return {
+    kind: kind as any,
+    start,
+    end,
+    value: JSON.parse(string.slice(start, end)),
+  }
 }
 
-function expect(str) {
+function expect(str: string) {
   if (kind === str) {
     lex()
     return
@@ -137,11 +210,17 @@ function expect(str) {
   throw syntaxError(`Expected ${str} but found ${found}.`)
 }
 
-function syntaxError(message) {
+type SyntaxError = {
+  message: string
+  start: number
+  end: number
+}
+
+function syntaxError(message: string): SyntaxError {
   return { message, start, end }
 }
 
-function skip(k) {
+function skip(k: string) {
   if (kind === k) {
     lex()
     return true
@@ -227,7 +306,7 @@ function lex() {
 function readString() {
   ch()
   while (code !== 34 && code > 31) {
-    if (code === 92) {
+    if (code === (92 as any)) {
       // \
       ch()
       switch (code) {
@@ -299,7 +378,7 @@ function readNumber() {
   if (code === 69 || code === 101) {
     // E e
     ch()
-    if (code === 43 || code === 45) {
+    if (code === (43 as any) || code === (45 as any)) {
       // + -
       ch()
     }

helpers/newOutline.ts

@@ -0,0 +1,100 @@
+import {
+  JSONArrayValue,
+  JSONObjectMember,
+  JSONObjectValue,
+  JSONValue,
+} from "./jsonParse"
+
+type RootEntry =
+  | {
+      kind: "RootObject"
+      astValue: JSONObjectValue
+    }
+  | {
+      kind: "RootArray"
+      astValue: JSONArrayValue
+    }
+
+type ObjectMemberEntry = {
+  kind: "ObjectMember"
+  name: string
+  astValue: JSONObjectMember
+  astParent: JSONObjectValue
+}
+
+type ArrayMemberEntry = {
+  kind: "ArrayMember"
+  index: number
+  astValue: JSONValue
+  astParent: JSONArrayValue
+}
+
+type PathEntry = RootEntry | ObjectMemberEntry | ArrayMemberEntry
+
+export function getJSONOutlineAtPos(
+  jsonRootAst: JSONObjectValue | JSONArrayValue,
+  posIndex: number
+): PathEntry[] | null {
+  try {
+    const rootObj = jsonRootAst
+
+    if (posIndex > rootObj.end || posIndex < rootObj.start)
+      throw new Error("Invalid position")
+
+    let current: JSONValue = rootObj
+
+    const path: PathEntry[] = []
+
+    if (rootObj.kind === "Object") {
+      path.push({
+        kind: "RootObject",
+        astValue: rootObj,
+      })
+    } else {
+      path.push({
+        kind: "RootArray",
+        astValue: rootObj,
+      })
+    }
+
+    while (current.kind === "Object" || current.kind === "Array") {
+      if (current.kind === "Object") {
+        const next: JSONObjectMember | undefined = current.members.find(
+          (member) => member.start <= posIndex && member.end >= posIndex
+        )
+
+        if (!next) throw new Error("Couldn't find child")
+
+        path.push({
+          kind: "ObjectMember",
+          name: next.key.value,
+          astValue: next,
+          astParent: current,
+        })
+
+        current = next.value
+      } else {
+        const nextIndex = current.values.findIndex(
+          (value) => value.start <= posIndex && value.end >= posIndex
+        )
+
+        if (nextIndex < 0) throw new Error("Couldn't find child")
+
+        const next: JSONValue = current.values[nextIndex]
+
+        path.push({
+          kind: "ArrayMember",
+          index: nextIndex,
+          astValue: next,
+          astParent: current,
+        })
+
+        current = next
+      }
+    }
+
+    return path
+  } catch (e: any) {
+    return null
+  }
+}