diff --git a/config/identical-files.json b/config/identical-files.json
index 6f652af2fa1..7045c97f9e9 100644
--- a/config/identical-files.json
+++ b/config/identical-files.json
@@ -469,7 +469,6 @@
     "csharp/ql/lib/semmle/code/csharp/dataflow/internal/AccessPathSyntax.qll",
     "go/ql/lib/semmle/go/dataflow/internal/AccessPathSyntax.qll",
     "java/ql/lib/semmle/code/java/dataflow/internal/AccessPathSyntax.qll",
-    "javascript/ql/lib/semmle/javascript/frameworks/data/internal/AccessPathSyntax.qll",
     "python/ql/lib/semmle/python/dataflow/new/internal/AccessPathSyntax.qll",
     "swift/ql/lib/codeql/swift/dataflow/internal/AccessPathSyntax.qll"
   ],
diff --git a/javascript/ql/lib/qlpack.yml b/javascript/ql/lib/qlpack.yml
index a5890b96630..b834321a32a 100644
--- a/javascript/ql/lib/qlpack.yml
+++ b/javascript/ql/lib/qlpack.yml
@@ -6,6 +6,7 @@ extractor: javascript
 library: true
 upgrades: upgrades
 dependencies:
+  codeql/dataflow: ${workspace}
   codeql/mad: ${workspace}
   codeql/regex: ${workspace}
   codeql/tutorial: ${workspace}
diff --git a/javascript/ql/lib/semmle/javascript/frameworks/data/internal/AccessPathSyntax.qll b/javascript/ql/lib/semmle/javascript/frameworks/data/internal/AccessPathSyntax.qll
deleted file mode 100644
index 0c3dc8427b2..00000000000
--- a/javascript/ql/lib/semmle/javascript/frameworks/data/internal/AccessPathSyntax.qll
+++ /dev/null
@@ -1,182 +0,0 @@
-/**
- * Module for parsing access paths from MaD models, both the identifying access path used
- * by dynamic languages, and the input/output specifications for summary steps.
- *
- * This file is used by the shared data flow library and by the JavaScript libraries
- * (which does not use the shared data flow libraries).
- */
-
-/**
- * Convenience-predicate for extracting two capture groups at once.
- */
-bindingset[input, regexp]
-private predicate regexpCaptureTwo(string input, string regexp, string capture1, string capture2) {
-  capture1 = input.regexpCapture(regexp, 1) and
-  capture2 = input.regexpCapture(regexp, 2)
-}
-
-/** Companion module to the `AccessPath` class. */
-module AccessPath {
-  /** A string that should be parsed as an access path. */
-  abstract class Range extends string {
-    bindingset[this]
-    Range() { any() }
-  }
-
-  /**
-   * Parses an integer constant `n` or interval `n1..n2` (inclusive) and gets the value
-   * of the constant or any value contained in the interval.
-   */
-  bindingset[arg]
-  int parseInt(string arg) {
-    result = arg.toInt()
-    or
-    // Match "n1..n2"
-    exists(string lo, string hi |
-      regexpCaptureTwo(arg, "(-?\\d+)\\.\\.(-?\\d+)", lo, hi) and
-      result = [lo.toInt() .. hi.toInt()]
-    )
-  }
-
-  /**
-   * Parses a lower-bounded interval `n..` and gets the lower bound.
-   */
-  bindingset[arg]
-  int parseLowerBound(string arg) { result = arg.regexpCapture("(-?\\d+)\\.\\.", 1).toInt() }
-
-  /**
-   * Parses an integer constant or interval (bounded or unbounded) that explicitly
-   * references the arity, such as `N-1` or `N-3..N-1`.
-   *
-   * Note that expressions of form `N-x` will never resolve to a negative index,
-   * even if `N` is zero (it will have no result in that case).
-   */
-  bindingset[arg, arity]
-  private int parseIntWithExplicitArity(string arg, int arity) {
-    result >= 0 and // do not allow N-1 to resolve to a negative index
-    exists(string lo |
-      // N-x
-      lo = arg.regexpCapture("N-(\\d+)", 1) and
-      result = arity - lo.toInt()
-      or
-      // N-x..
-      lo = arg.regexpCapture("N-(\\d+)\\.\\.", 1) and
-      result = [arity - lo.toInt(), arity - 1]
-    )
-    or
-    exists(string lo, string hi |
-      // x..N-y
-      regexpCaptureTwo(arg, "(-?\\d+)\\.\\.N-(\\d+)", lo, hi) and
-      result = [lo.toInt() .. arity - hi.toInt()]
-      or
-      // N-x..N-y
-      regexpCaptureTwo(arg, "N-(\\d+)\\.\\.N-(\\d+)", lo, hi) and
-      result = [arity - lo.toInt() .. arity - hi.toInt()] and
-      result >= 0
-      or
-      // N-x..y
-      regexpCaptureTwo(arg, "N-(\\d+)\\.\\.(\\d+)", lo, hi) and
-      result = [arity - lo.toInt() .. hi.toInt()] and
-      result >= 0
-    )
-  }
-
-  /**
-   * Parses an integer constant or interval (bounded or unbounded) and gets any
-   * of the integers contained within (of which there may be infinitely many).
-   *
-   * Has no result for arguments involving an explicit arity, such as `N-1`.
-   */
-  bindingset[arg, result]
-  int parseIntUnbounded(string arg) {
-    result = parseInt(arg)
-    or
-    result >= parseLowerBound(arg)
-  }
-
-  /**
-   * Parses an integer constant or interval (bounded or unbounded) that
-   * may reference the arity of a call, such as `N-1` or `N-3..N-1`.
-   *
-   * Note that expressions of form `N-x` will never resolve to a negative index,
-   * even if `N` is zero (it will have no result in that case).
-   */
-  bindingset[arg, arity]
-  int parseIntWithArity(string arg, int arity) {
-    result = parseInt(arg)
-    or
-    result in [parseLowerBound(arg) .. arity - 1]
-    or
-    result = parseIntWithExplicitArity(arg, arity)
-  }
-}
-
-/** Gets the `n`th token on the access path as a string. */
-private string getRawToken(AccessPath path, int n) {
-  // Avoid splitting by '.' since tokens may contain dots, e.g. `Field[foo.Bar.x]`.
-  // Instead use regexpFind to match valid tokens, and supplement with a final length
-  // check (in `AccessPath.hasSyntaxError`) to ensure all characters were included in a token.
-  result = path.regexpFind("\\w+(?:\\[[^\\]]*\\])?(?=\\.|$)", n, _)
-}
-
-/**
- * A string that occurs as an access path (either identifying or input/output spec)
- * which might be relevant for this database.
- */
-class AccessPath extends string instanceof AccessPath::Range {
-  /** Holds if this string is not a syntactically valid access path. */
-  predicate hasSyntaxError() {
-    // If the lengths match, all characters must haven been included in a token
-    // or seen by the `.` lookahead pattern.
-    this != "" and
-    not this.length() = sum(int n | | getRawToken(this, n).length() + 1) - 1
-  }
-
-  /** Gets the `n`th token on the access path (if there are no syntax errors). */
-  AccessPathToken getToken(int n) {
-    result = getRawToken(this, n) and
-    not this.hasSyntaxError()
-  }
-
-  /** Gets the number of tokens on the path (if there are no syntax errors). */
-  int getNumToken() {
-    result = count(int n | exists(getRawToken(this, n))) and
-    not this.hasSyntaxError()
-  }
-}
-
-/**
- * An access part token such as `Argument[1]` or `ReturnValue`, appearing in one or more access paths.
- */
-class AccessPathToken extends string {
-  AccessPathToken() { this = getRawToken(_, _) }
-
-  private string getPart(int part) {
-    result = this.regexpCapture("([^\\[]+)(?:\\[([^\\]]*)\\])?", part)
-  }
-
-  /** Gets the name of the token, such as `Member` from `Member[x]` */
-  string getName() { result = this.getPart(1) }
-
-  /**
-   * Gets the argument list, such as `1,2` from `Member[1,2]`,
-   * or has no result if there are no arguments.
-   */
-  string getArgumentList() { result = this.getPart(2) }
-
-  /** Gets the `n`th argument to this token, such as `x` or `y` from `Member[x,y]`. */
-  string getArgument(int n) { result = this.getArgumentList().splitAt(",", n).trim() }
-
-  /** Gets the `n`th argument to this `name` token, such as `x` or `y` from `Member[x,y]`. */
-  pragma[nomagic]
-  string getArgument(string name, int n) { name = this.getName() and result = this.getArgument(n) }
-
-  /** Gets an argument to this token, such as `x` or `y` from `Member[x,y]`. */
-  string getAnArgument() { result = this.getArgument(_) }
-
-  /** Gets an argument to this `name` token, such as `x` or `y` from `Member[x,y]`. */
-  string getAnArgument(string name) { result = this.getArgument(name, _) }
-
-  /** Gets the number of arguments to this token, such as 2 for `Member[x,y]` or zero for `ReturnValue`. */
-  int getNumArgument() { result = count(int n | exists(this.getArgument(n))) }
-}
diff --git a/javascript/ql/lib/semmle/javascript/frameworks/data/internal/ApiGraphModels.qll b/javascript/ql/lib/semmle/javascript/frameworks/data/internal/ApiGraphModels.qll
index 1cb4e189339..e76a100263c 100644
--- a/javascript/ql/lib/semmle/javascript/frameworks/data/internal/ApiGraphModels.qll
+++ b/javascript/ql/lib/semmle/javascript/frameworks/data/internal/ApiGraphModels.qll
@@ -70,8 +70,8 @@ private module API = Specific::API;
 
 private module DataFlow = Specific::DataFlow;
 
-private import Specific::AccessPathSyntax
 private import ApiGraphModelsExtensions as Extensions
+import codeql.dataflow.internal.AccessPathSyntax
 
 /** Module containing hooks for providing input data to be interpreted as a model. */
 module ModelInput {
@@ -327,29 +327,29 @@ predicate isRelevantFullPath(string type, string path) {
 }
 
 /** A string from a CSV row that should be parsed as an access path. */
-private class AccessPathRange extends AccessPath::Range {
-  AccessPathRange() {
-    isRelevantFullPath(_, this)
-    or
-    exists(string type | isRelevantType(type) |
-      summaryModel(type, _, this, _, _) or
-      summaryModel(type, _, _, this, _)
-    )
-    or
-    typeVariableModel(_, this)
-  }
+private predicate accessPathRange(string s) {
+  isRelevantFullPath(_, s)
+  or
+  exists(string type | isRelevantType(type) |
+    summaryModel(type, _, s, _, _) or
+    summaryModel(type, _, _, s, _)
+  )
+  or
+  typeVariableModel(_, s)
 }
 
+import AccessPath<accessPathRange/1>
+
 /**
  * Gets a successor of `node` in the API graph.
  */
 bindingset[token]
-API::Node getSuccessorFromNode(API::Node node, AccessPathToken token) {
+API::Node getSuccessorFromNode(API::Node node, AccessPathTokenBase token) {
   // API graphs use the same label for arguments and parameters. An edge originating from a
   // use-node represents an argument, and an edge originating from a def-node represents a parameter.
   // We just map both to the same thing.
   token.getName() = ["Argument", "Parameter"] and
-  result = node.getParameter(AccessPath::parseIntUnbounded(token.getAnArgument()))
+  result = node.getParameter(parseIntUnbounded(token.getAnArgument()))
   or
   token.getName() = "ReturnValue" and
   result = node.getReturn()
@@ -362,11 +362,9 @@ API::Node getSuccessorFromNode(API::Node node, AccessPathToken token) {
  * Gets an API-graph successor for the given invocation.
  */
 bindingset[token]
-API::Node getSuccessorFromInvoke(Specific::InvokeNode invoke, AccessPathToken token) {
+API::Node getSuccessorFromInvoke(Specific::InvokeNode invoke, AccessPathTokenBase token) {
   token.getName() = "Argument" and
-  result =
-    invoke
-        .getParameter(AccessPath::parseIntWithArity(token.getAnArgument(), invoke.getNumArgument()))
+  result = invoke.getParameter(parseIntWithArity(token.getAnArgument(), invoke.getNumArgument()))
   or
   token.getName() = "ReturnValue" and
   result = invoke.getReturn()
@@ -378,10 +376,12 @@ API::Node getSuccessorFromInvoke(Specific::InvokeNode invoke, AccessPathToken to
 /**
  * Holds if `invoke` invokes a call-site filter given by `token`.
  */
-pragma[inline]
-private predicate invocationMatchesCallSiteFilter(Specific::InvokeNode invoke, AccessPathToken token) {
+bindingset[token]
+private predicate invocationMatchesCallSiteFilter(
+  Specific::InvokeNode invoke, AccessPathTokenBase token
+) {
   token.getName() = "WithArity" and
-  invoke.getNumArgument() = AccessPath::parseIntUnbounded(token.getAnArgument())
+  invoke.getNumArgument() = parseIntUnbounded(token.getAnArgument())
   or
   Specific::invocationMatchesExtraCallSiteFilter(invoke, token)
 }
diff --git a/javascript/ql/lib/semmle/javascript/frameworks/data/internal/ApiGraphModelsSpecific.qll b/javascript/ql/lib/semmle/javascript/frameworks/data/internal/ApiGraphModelsSpecific.qll
index 4c9c8e147eb..536d6d5a966 100644
--- a/javascript/ql/lib/semmle/javascript/frameworks/data/internal/ApiGraphModelsSpecific.qll
+++ b/javascript/ql/lib/semmle/javascript/frameworks/data/internal/ApiGraphModelsSpecific.qll
@@ -4,14 +4,13 @@
  * It must export the following members:
  * ```ql
  * class Unit // a unit type
- * module AccessPathSyntax // a re-export of the AccessPathSyntax module
  * class InvokeNode // a type representing an invocation connected to the API graph
  * module API // the API graph module
  * predicate isPackageUsed(string package)
  * API::Node getExtraNodeFromPath(string package, string type, string path, int n)
- * API::Node getExtraSuccessorFromNode(API::Node node, AccessPathToken token)
- * API::Node getExtraSuccessorFromInvoke(InvokeNode node, AccessPathToken token)
- * predicate invocationMatchesExtraCallSiteFilter(InvokeNode invoke, AccessPathToken token)
+ * API::Node getExtraSuccessorFromNode(API::Node node, AccessPathTokenBase token)
+ * API::Node getExtraSuccessorFromInvoke(InvokeNode node, AccessPathTokenBase token)
+ * predicate invocationMatchesExtraCallSiteFilter(InvokeNode invoke, AccessPathTokenBase token)
  * InvokeNode getAnInvocationOf(API::Node node)
  * predicate isExtraValidTokenNameInIdentifyingAccessPath(string name)
  * predicate isExtraValidNoArgumentTokenInIdentifyingAccessPath(string name)
@@ -25,9 +24,7 @@ private import ApiGraphModels
 // Re-export libraries needed by ApiGraphModels.qll
 module API = JS::API;
 
-import semmle.javascript.frameworks.data.internal.AccessPathSyntax as AccessPathSyntax
 import JS::DataFlow as DataFlow
-private import AccessPathSyntax
 
 /**
  * Holds if `rawType` represents the JavaScript type `qualifiedName` from the given NPM `package`.
@@ -137,7 +134,7 @@ API::Node getExtraNodeFromType(string type) {
  * Gets a JavaScript-specific API graph successor of `node` reachable by resolving `token`.
  */
 bindingset[token]
-API::Node getExtraSuccessorFromNode(API::Node node, AccessPathToken token) {
+API::Node getExtraSuccessorFromNode(API::Node node, AccessPathTokenBase token) {
   token.getName() = "Member" and
   result = node.getMember(token.getAnArgument())
   or
@@ -183,7 +180,7 @@ API::Node getExtraSuccessorFromNode(API::Node node, AccessPathToken token) {
  * Gets a JavaScript-specific API graph successor of `node` reachable by resolving `token`.
  */
 bindingset[token]
-API::Node getExtraSuccessorFromInvoke(API::InvokeNode node, AccessPathToken token) {
+API::Node getExtraSuccessorFromInvoke(API::InvokeNode node, AccessPathTokenBase token) {
   token.getName() = "Instance" and
   result = node.getInstance()
   or
@@ -233,7 +230,7 @@ API::Node getAFuzzySuccessor(API::Node node) {
  * Holds if `invoke` matches the JS-specific call site filter in `token`.
  */
 bindingset[token]
-predicate invocationMatchesExtraCallSiteFilter(API::InvokeNode invoke, AccessPathToken token) {
+predicate invocationMatchesExtraCallSiteFilter(API::InvokeNode invoke, AccessPathTokenBase token) {
   token.getName() = "NewCall" and
   invoke instanceof API::NewNode
   or
@@ -246,9 +243,8 @@ predicate invocationMatchesExtraCallSiteFilter(API::InvokeNode invoke, AccessPat
     operand = token.getAnArgument() and
     argIndex = operand.splitAt("=", 0) and
     stringValue = operand.splitAt("=", 1) and
-    invoke
-        .getArgument(AccessPath::parseIntWithArity(argIndex, invoke.getNumArgument()))
-        .getStringValue() = stringValue
+    invoke.getArgument(parseIntWithArity(argIndex, invoke.getNumArgument())).getStringValue() =
+      stringValue
   )
 }
 
@@ -338,7 +334,7 @@ predicate isExtraValidTokenArgumentInIdentifyingAccessPath(string name, string a
   or
   name = "WithStringArgument" and
   exists(argument.indexOf("=")) and
-  exists(AccessPath::parseIntWithArity(argument.splitAt("=", 0), 10))
+  exists(parseIntWithArity(argument.splitAt("=", 0), 10))
 }
 
 module ModelOutputSpecific {
diff --git a/javascript/ql/test/library-tests/frameworks/data/test.ql b/javascript/ql/test/library-tests/frameworks/data/test.ql
index 5ee8d0e3f9c..039a0aa3920 100644
--- a/javascript/ql/test/library-tests/frameworks/data/test.ql
+++ b/javascript/ql/test/library-tests/frameworks/data/test.ql
@@ -1,6 +1,6 @@
 import javascript
 import testUtilities.ConsistencyChecking
-import semmle.javascript.frameworks.data.internal.AccessPathSyntax as AccessPathSyntax
+import semmle.javascript.frameworks.data.internal.ApiGraphModels as ApiGraphModels
 
 class Steps extends ModelInput::SummaryModelCsv {
   override predicate row(string row) {
@@ -126,6 +126,6 @@ class SyntaxErrorTest extends ModelInput::SinkModelCsv {
   }
 }
 
-query predicate syntaxErrors(AccessPathSyntax::AccessPath path) { path.hasSyntaxError() }
+query predicate syntaxErrors(ApiGraphModels::AccessPath path) { path.hasSyntaxError() }
 
 query predicate warning = ModelOutput::getAWarning/0;
diff --git a/javascript/ql/test/library-tests/frameworks/data/warnings.ql b/javascript/ql/test/library-tests/frameworks/data/warnings.ql
index 94e6f74aae7..3a7e2de70e8 100644
--- a/javascript/ql/test/library-tests/frameworks/data/warnings.ql
+++ b/javascript/ql/test/library-tests/frameworks/data/warnings.ql
@@ -1,5 +1,4 @@
 import javascript
-import semmle.javascript.frameworks.data.internal.AccessPathSyntax as AccessPathSyntax
 import semmle.javascript.frameworks.data.internal.ApiGraphModels as ApiGraphModels
 
 private class InvalidTypeModel extends ModelInput::TypeModelCsv {