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getOrCreateIdentifier() — react Function Reference

Architecture documentation for the getOrCreateIdentifier() function in CollectHoistablePropertyLoads.ts from the react codebase.

Function typescript MIRInfrastructure HIR calls 1 called by 3

Entity Profile

Dependency Diagram

graph TD
  084ee472_d720_c32a_2f8a_dffbbb1be6af["getOrCreateIdentifier()"]
  50c372df_146d_1b4c_de3a_0589d6591a75["PropertyPathRegistry"]
  084ee472_d720_c32a_2f8a_dffbbb1be6af -->|defined in| 50c372df_146d_1b4c_de3a_0589d6591a75
  afcd35a2_87ac_64f3_d39b_e78954698dc0["getOrCreateProperty()"]
  afcd35a2_87ac_64f3_d39b_e78954698dc0 -->|calls| 084ee472_d720_c32a_2f8a_dffbbb1be6af
  2c85e7b5_d003_b439_dc7b_cb881996ea23["collectNonNullsInBlocks()"]
  2c85e7b5_d003_b439_dc7b_cb881996ea23 -->|calls| 084ee472_d720_c32a_2f8a_dffbbb1be6af
  bc0d4a49_256e_973f_feb6_ed785896b72b["reduceMaybeOptionalChains()"]
  bc0d4a49_256e_973f_feb6_ed785896b72b -->|calls| 084ee472_d720_c32a_2f8a_dffbbb1be6af
  041ca752_10c1_3cda_1f5c_02f44a01310e["invariant()"]
  084ee472_d720_c32a_2f8a_dffbbb1be6af -->|calls| 041ca752_10c1_3cda_1f5c_02f44a01310e
  style 084ee472_d720_c32a_2f8a_dffbbb1be6af fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

compiler/packages/babel-plugin-react-compiler/src/HIR/CollectHoistablePropertyLoads.ts lines 244–276

  getOrCreateIdentifier(
    identifier: Identifier,
    reactive: boolean,
  ): PropertyPathNode {
    /**
     * Reads from a statically scoped variable are always safe in JS,
     * with the exception of TDZ (not addressed by this pass).
     */
    let rootNode = this.roots.get(identifier.id);

    if (rootNode === undefined) {
      rootNode = {
        root: identifier.id,
        properties: new Map(),
        optionalProperties: new Map(),
        fullPath: {
          identifier,
          reactive,
          path: [],
        },
        hasOptional: false,
        parent: null,
      };
      this.roots.set(identifier.id, rootNode);
    } else {
      CompilerError.invariant(reactive === rootNode.fullPath.reactive, {
        reason:
          '[HoistablePropertyLoads] Found inconsistencies in `reactive` flag when deduping identifier reads within the same scope',
        loc: identifier.loc,
      });
    }
    return rootNode;
  }

Domain

Subdomains

Defined In

Calls

Called By

Source

Frequently Asked Questions

What does getOrCreateIdentifier() do?
getOrCreateIdentifier() is a function in the react codebase, defined in compiler/packages/babel-plugin-react-compiler/src/HIR/CollectHoistablePropertyLoads.ts.
Where is getOrCreateIdentifier() defined?
getOrCreateIdentifier() is defined in compiler/packages/babel-plugin-react-compiler/src/HIR/CollectHoistablePropertyLoads.ts at line 244.
What does getOrCreateIdentifier() call?
getOrCreateIdentifier() calls 1 function(s): invariant.
What calls getOrCreateIdentifier()?
getOrCreateIdentifier() is called by 3 function(s): collectNonNullsInBlocks, getOrCreateProperty, reduceMaybeOptionalChains.

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